The Weapons:

The weapons here are 'steampunk versions' of the weapons you find in the D&D 5E PHB page 149. I've subtracted a few weapons and added some Oomph to the martial weapons, but still kept it relatively sane.

I've not included in-depth descriptions or concept art, partly because most of the weapons are pretty self-explanatory, but also because this was made on a whim and given away for free, so adding descriptions of the weapons would destroy my work-to-fun ratio.

Weapon properties

Cannister: Weapons with this property are either gas-powered or the attack damage is partially dealt by a pressurised and/or gaseous substance.
One cannister works for 20 attacks, after which the cannister must be discarded, and replaced. Without the cannister the weapon can only deal mundane damage.

Charging: Weapons with this property are powered by energy cells. It takes a bonus action to charge the weapon. Energy cells must be replaced 1/week. Without the energy cell the weapon can only deal mundane damage.
* Chainsaws become entirely useless without energy cells.

Concealed: Weapons with this property are either constructed so they don't look like weapons, or so that they are easily hidden. People searching for hidden weapons have disadvantage on investigation/perception checks to find these weapons.

Grapple: On a hit with this weapon the target is Grappled. DC 10 to break the grapple.

Reload: Weapons with this property must be reloaded after the number of shots listed under 'Properties'.
It takes an action to reload a weapon.

Shields

Armors

What The Fog

This bland-looking woolly coat is equipped with double-chambered cannisters of dry ice & water. Activated as a bonus action a small puff of smoke is discharged to confuse enemies and allow the wearer a quick escape.

Grants 'bonus action disengage'.

Pyromancers Cape

This flashy purple velvet cape has tacky red and orange flames embrodiered along the hem. The cape is chemically treated to achieve a degree of fire resistance, but it can't withstand a direct hit.

Grants Resistance to fire damage from AOEs

Aviator's Mantle

This beautiful sky-blue heavy silk mantle has extra wide sleeves and a cleverly hidden collapsible whalebone harness, which in combination folds out to form a simple hanglider. It allows the wielder to glide to safety if falling from great hights. It can be activated as a reaction.

Gliding: For every 10 ft vertical fall, move 5 ft horisontally in a direction chosen by wearer.
DC 10 Dex save to land safely, on a failed save take ½ the calculated fall damage.

Portable Forcefield Bolero

The Energy Cells sewn into the hem of this highly fashionable black cropped velvet bolero power a small forcefield. It is best described as a layman's version of a mage armor, in that it's a catch-all, but not effective against big hits.

Ironically casters can't use it, as it blocks the casting done by the wearer itself.

(No, it is not possible to simply turn the bolero inside-out and thus block incoming magic. It has been tried with fatal results.)

Pelisse of Potential

This fur-lined pelisse is slightly scruffed and seems to have been expertly repaired dozens of times. It is strangely bulky and it sometimes feels as if critters nest in the lining, but there's nothing to be found. Whatever it is, it is often in the right place at the right time, absorbing some of the damage to the wielder.

The pelisse grants Resistance to either Slashing or Piercing or Bludgeoning damage. Roll 1d3 at start of combat or at initiative to decide which damage type the pelisse grants resistance to in that particular battle.

Arcanists Volatile Armor

The artificer's apprentice who patented these armors tried to imbue them with resistance to all damage types. This failed spectacularly but resulted in a stunning rainbow-hued alloy, which is strong, light and borderline fluid, making Volatile armors very formfitting. The alloy is so irregular, the level of protection is always anyone's guess, but it looks magnificent and sometimes it works.

Roll 11+1d6 for random AC when you roll Initiative or at start of combat.

Assassin's Armor

An alchymist named Vanta Black invented and patented a dye so black it must be imbued by the devil himself.
Armor treated with the costly dye makes the wearer all but disappear in darkness, and even in the daylight it obscures the wearer.

Only usable by Rogues - DM Fiat for other classes.
Grants Advantage on Stealth Checks.

Magnetic Deflection Vest

This vest is constructed from several layers of starched cotton. In the watch pocket is a small energy cell magnetising the thin metal sheets hidden in the lining. The magnetic shield deflects smaller missiles made from metal.

Grants a +3 AC bonus against metallic projectiles.

Transformer's Bodysuit

This sleek black leather bodysuit is reinforced with black scales of unknown origin. It is fitted with hooks and loops for ropes and snap hooks and comes with adhesive gloves and soft rubber soled shoes.

Grants advantage on climb checks and allows the wielder to half fall damage if there's a wall or similar to grab on to to slow the fall.

Chitin Modular Vest

It is a point of pride for druids to make their own armor from natural materials. Such armors are modular as they evolve and improve over time, and change with repairs and added new materials. This iterative proces results in highly unique, personalised, and stunning pieces of armor, tailored specifically to the wearer. The effectiveness of the armor depends on the skills of the druid wearing it.

Only usable by druids - DM Fiat for other classes.
Uses Wis for AC instead of Dex.

Malignant Turncoat

This ancle-length leather duster is dyed a deep bottle-green color. It seems to be made from exclusive Ostrich leather, but what looks to be vacant quill follicles in the bumpy leather surface are actually tiny valves. The coat is equipped with a shock absorbing pneumatic system which triggers when the coat takes a heavy hit - the system then releases a cloud of poisonous gas in a 5 ft radius. Doesn't trigger when hit by missiles. Hugging while wearing the coat is discouraged.

Triggers as a reaction to a melee hit.
Wearer is not affected by the poison.

Mechanic's boiler suit

This well-worn, padded, oilstained boiler-suit is made from heavy denim and has a multitude of pockets. The pockets hold tools, machine parts, bits & bobs, and one both looks and feels extremely tech-wise while wearing it.
The combination of the padding and the content of the pockets makes the suit work as a not too shabby improvised armor.

Wearing the armor grants proficiency with all Vehicles and the suit comes with a set of 'Mechanic's tools' (Tinkerers Tools).

Tesla Greatcoat

This elegant well-tailored charcoal greatcoat is equipped with a shock-reactive trigger and an energy cell.
If hit by a ranged attack, a reactive beam of crackling energy shoots out from one of the front brass buttons.

As a reaction deals 1d4 lightning damage to the attacker (no save)

Mariner's Mackinaw

This unwieldy, bulky, mustard-colored piece of garment is anything but fahionable. But is is warm and closer inspection reveals that it's constructed of twil lined with sheets of rubber. It is 'half a diving suit'.
A hood and a small cannister of compressed air are hidden in the collar. As an action the hood can be pulled all the way over the head and the suit will seal around the waist, wrists & neck, keeping water away from head and torso.

The cannister has air supply for 5 minutes.

Hydraulic Stride 'Under Armor'

Constructed to be worn like overalls but under civil clothing, this armor is made from thin titanium plates: Despite the light design the construgtion overall is quite heavy and bulky. The leg armor is fitted with pneumatic rods enabling the wearer to jump both higher and longer than normally.

Jump distance, both horizontally and vertically is tripled.

P-5000 Pneumatic Exoskeleton

This Exoskeleton is constructed from copper pipes, brass rods and leather dyed a sickly high-visibility yellow-green hue. It is neither practical nor discreet. Originally made for heavy lifting in the Welsh coal mines, it is a heavy and noisy wearable machine and was not intended for urban use. But it is good for protection so Private Security Companies, i.e. thugs with financial backing started using them as armor.

Grants Advantage to STR checks & saves, +10 to speed.

Self-donning Force-powered Gold-Titanium Alloy Full Body Armor

This armor was made by an extremely rich highly eccentric weapon manufacturer who dubbed himself
'The Ferrous Gentleman' ...
Yeah you asked for this.

Grants a 100 ft fly speed, and has mounts for flame throwers - see weapons list.

Image credits

Front page: Artwork Kawaii Tornado on Inkarnate
Front page: Image by Zoltan Tasi on Unsplash.com