1. Unicorns. Obviously.
2. Pools: indoor, outdoor, and extra-dimensional.
3. Planetarium with actual planets.
4. Secret internal Google documents.
5. Unicorn food. (see #1 on the list)
6. Jack Dorsey's sense of humor.
7. Fail Whale aquarium and Lolrus bukkit.
8. Box of "Verified Account" stickers made by a confused older relative in the "printing" industry. Whatever that is.
9. Dial up.
10. Megan Fox
What do you think is in Biz Stone's house? Tell us in the comments!