Extra Steam Keys - let's trade?

[Spuuky]

I have the following, Updated 12/23/15:

Abyss Odyssey
Contagion
Coin Crypt
Fallen Enchantress: Legendary Heroes
Freedom Planet
Screencheat
Contraption Maker
Torchlight 2
Sonic & All-Stars Racing Transformed
Legend of Grimrock
PixelJunk Eden
The Last Remnant
Frozen Synapse
Dust: An Elysian Tail
FEZ
Papo & Yo
Toki Tori
Toki Tori 2+
Bastion
LIMBO
Metro 2033, Risen, and Sacred Citadel
Crayon Physics Deluxe
Nightsky
Superbrothers: Sword & Sworcery EP
Super Meat Boy, Lone Survivor, and Braid
Humble Indie Bundle #2
Humble Indie Bundle #3
Samorost 2
Cortex Command
Cthulhu Saves The World
EDGE

Origin keys - I've never tried to give these away, I assume it just generates a key though?
Burnout Paradise: The Ultimate Box
Command & Conquer: Red Alert 3 - Uprising
Crysis 2 Maximum Edition
Dead Space
Medal of Honor
Mirror's Edge

Some, I will give away to a good home, if you make a compelling case. Others I will trade because I may have a use for them some day so I don't want to just give them away. Obviously what I'd most like is a game on my wishlist (http://steamcommunity.com/id/spuuky/wishlist) but I accept the likelihood that no one has those lying around.