Well, I have given up on Spiral Knights. But due to the wonderful people who still play it, I have the opportunity to use my accumulated wealth to buy other games.
Oh, and before I proceed to the list of items I have for sale, I also want to note I am Buying Steam Trading Cards.

Anyway, the list of stuff I have, starting from the approximately more valuable ones:
Black Kat Pod
True Love Locket
2x Tetra-Heart Pendant
3x Kat Tribe Fetish
Bucket of Flawed Snowballs
Serene Culet
Serene Tailed Helm
Iron Wolf Helm
Iron Wolf Armor
Gold Wolf Helm
Gold Wolf Armor
(One pair of both in-game, but I can also supply them through Steam for those who lack 3 cents on their Steam wallet.)

Frosty Stuff:
2x Frosty Vertical Vents
Frosty Side Blade
Frosty Toupee
Frosty Dapper Combo
Frosty Ribbon
Frosty Fur Coat
Frosty Fur Cap
Frosty Flak Jacket
Frosty Cloak
Frosty Culet
Frosty Tailed Helm
Frosty Raiment
Frosty Crescent Helm
Frosty Scale Mail
3x Frosty Brigandine
Frosty Round Helm

Other Accessories:
Cool Party Blowout
Fancy Moustache
2x Fancy Party Blowout
Military Party Hat
Regal Party Hat
Toasty Birthday Candle
Toasty Party Blowout
Toasty Party Hat
Dusky Plumed Cap
Volcanic Crest
Azure Guardian Crest

Usables:
Chartreuse, Medium Firework
Chartreuse, Small Firework
Lavender, Medium Firework
Sky, Medium Firework
Sky, Small Firework
37x Winter Confetti
31x Confetti
141x Flawed Snowball
477x Trick or Treat Confetti

A ton of all sorts of materials, the rarest being Maiden's Tears...

Also, I got bound equipment. Some are plainer, some are fancier, some have mildly useful UVs.
Justifier Hat (Normal Max, Shadow Low)
Justifier Jacket
Dark Thorn Blade (Undead Very High)
Valkyrie Helm
Valkyrie Mail (Elemental Medium, Poison Low, Fire Low)
Dragon Scale Helm (Heavy Pipe, Toasty Helm Guards, Festively Striped Scarf, Toasty Wide Vee)
Dragon Scale Mail (Piercing Low)
Dragon Scale Shield
Skolver Cap (Military Mecha Wings, Frosty Headband, Holly Striped Scarf)
Skolver Coat
Blazebreak Helm (Dusky Ribbon, Fancy Glasses, Heavy Com Unit, Fancy Flower)
Blazebreak Armor (Volcanic Dragon Wings)
Volcanic Plate Helm (Piercing Low)
Volcanic Plate Mail (Elemental Medium, Proto Crest)
Volcanic Plate Shield (Normal High)
Vog Cub Cap (Normal Low)
Vog Cub Coat
Radiant Silvermail (Shadow Low)
Obsidian Edge (Gremlin Low)
Obsidian Carbine
Obsidian Crusher
Sentenza
Gran Faust
Grey Owlite Shield
Deadly Virulisk Mask
Deadly Virulisk Suit
Deadshot Chapeau
Deadshot Mantle
Miracle Hood
Miracle Cloak
Sunset Stetson
Sunset Duster
2x Brandish (Fiend Low) (Unbound)
Heavy Pulsar
Voltech Alchemer Mk II
Ignition Helm (Unbound)
Ignition Armor (Unbound)

You can also take a look at my SK inventory as a whole, but it's kinda messy: http://steamcommunity.com/id/tornmandate/inventory/#99900
And yes, I am aware that most of my stuff is kinda crap, it is probably just going on the AH, but there's no harm posting it here.