Um... yeah... lots of duplicates, I have no clue where I got some from but here they are, 1 or two might not work, I don't remember if I used them or not, if it doesn't work, I'm really sorry, you can choose another one from the list.
1. Galactic (s)Hitman - 1 Key
2. Horror Hospital - 3 Keys
3. Minion Masters - 1 Gift (I need your email or to add me on steam)
4. [DLC] Forge of Gods - Infernal War Pack - 1 Key
5. Weapons Genius - 1 Key
Time to give them, sorry for my late response, whosgamingnow's notifications didn't come throught.
I also have a few darkest crusade keys.