Ah... yes, a worthy question. I am partial to:

- The blood of innocents
- Swords
- 24-pack of Mountain Dew
- Blueberries
- Tomes
- Robes, with hoods
- Mint-condition 1st Edition D&D rulebooks
- Spelljammer boxed sets
- The "Gladiator" handbook from the Dark Sun setting; very rare...