Binder/Binding Help?

Archie🏳️‍🌈 • Gay?, definitely genderqueer, slytherpuff, potterhead 100%

So I really want a binder, but my parents aren’t really fully accepting of my gender identity. So I don’t know how to convince them to get me a binder, so I was wondering if there are any safe ways to bind without buying an actual binder. I’m pangender/gender fluid. Also if you have any suggestions on how to convince my parents to buy me a binder please do tell.