- Some cool rocks
- Whatever non-synthetic petroleum products are in the garage
- A mid-2013 MacBook Air (at least according to its manufacturer)
Serious Answer: - A bakelite safety razor from the WWII rationing era (somewhere between 1941 & 1945, given what I can find on the manufacturer)
- Some broken pieces of pottery my grandfather swiped from ancient Jericho on a trip in the '60s
- A vintage Canon SLR camera used on the same trip