Now there are many websites to be able to spend the bitcoin that we have, to buy mining hardware I used to buy at newegg.
Then we can buy Amazon gift cards to be able to spend bitcoin on Amazon. I for entertainment sometimes spend bitcoin on
several online gambling sites. But most people prefer to convert bitcoin into fiat to be able to spend bitcoin.
Of course, there are several sites like the Newegg, overstock.com, Amazon, NameCheap, Try Lolli, Coin Cards, Try Purse.io etc. Browse through the several catalogue and based one your preference choose where to spend it. Depending on the status of Bitcoin in the country, there maybe other merchant services that will also allow Bitcoin to be used to pay utility bills.