Electronics
Honey
Baklava
Bullion
Some guy a while ago bought a pizza for 10,000 BTC( Worth 5million+ now), even though it was worth about $40 then. Lawl.
They weren't worth anything at the time (early 2010.)
That's the very first recorded Bitcoin purchase, and it basically set the initial price for a bitcoin at $0.002 each. Quite a steal in hindsight.
https://bitcointalk.org/index.php?topic=137.0