Use bitcoin to buy gift playing cards from services like eGifter, or Gyft and then redeem them at Amazon, BestBuy, and loads of other popular shops. Companies like Microsoft, have recently commenced offering games and other apps for bitcoin.
Instead of being physical money carried around and exchanged inside the real world, cryptocurrency payments exist only as virtual entries to a web database describing particular transactions. When you transfer cryptocurrency finances, the transactions are recorded in a public ledger.