Can you buy equipment to do tongue piercings at home?

I'm sure you can if you are a professional piercer. If you are not you should not do this since the tongue is the one of the strongest muscles we have and if you pierce it wrong you can get into a lot of trouble. It's just one big muscle. Get yourself to a professional person to do this and if you are planning to become one go see one anyway to find out where he bought his stuff from.