You can only buy in places that accept BTC, which is very few
it's no secret that if you have a lot of bitcoins, you can buy anything. well, currently the use of bitcoin is almost in the know by everyone in the world. even you can buy food with bitcoin, or home.
Airplane tickets to Latvia
A special shout-out is in order for airBaltic, not because it flies to Latvia (and other parts of Europe and the Middle East), but because in 2014 it became the first airline in the world to accept bitcoins for those flights.