Sputnik I use Paxful ( I live in the US ). I have traded bitcoins for different gift cards. iTunes, Amazon, WalMart, hotels.com etc. This have paid for free movies, electronics, groceries and vacation stays. Getting cash I use money transfer.
8or9 is correct, bitcoins is a very volatile currency. I got in a few years ago when it was low, so it has treated me well. Trading with bitcoins adds another layer to you gambling.