You can have a look at my wishlist. For trading cards I'd prefer Portal 2, the ones I already have are at the bottom. At the moment I am only interested in trades which involve the coupons or keys.
Steam coupons
Duke Nukem 3D -50%
The Bridge -33%
I can also throw in some keys if you're interested:
Steam keys
Nuclear Dawn
Two Worlds II - Castle Defense
Iron Grip: Warlord
Ion Assault
Desura key
Holy Avatar vs. Maidens of the Dead
Trading cards
Portal 2: The Lab + Destruction
Half Life 2: Trouble Underground + Respite + Gordon & Alyx
You can have a look at my wishlist. For trading cards I'd prefer Portal 2, the ones I already have are at the bottom. At the moment I am only interested in trades which involve the coupons or keys.
Steam coupons
I can also throw in some keys if you're interested:
Steam keys
Desura key
Trading cards