As Forbes’ Kashmir Hill demonstrated last week, the Bitcoin economy is small. Hill attempted to live on Bitcoin for a week going through coffee withdraw and losing 5lbs in the process. She should have waited a week.
This means you can use your bitcoins (although indirectly) to buy a whopper at Burger King, a bed to sleep in at Marriott, some new shoes from Nike and hundreds more. Gift cards purchased through Gyft can be spent at over 50,000 locations. However, the service is only available in the US. If you want to live on Bitcoin elsewhere better move to Berlin.