There are some home-brewable ways for single layer boards, particularly one sided -- you can do the old school copper board + mask + etch with something like fe

There are some home-brewable ways for single layer boards, particularly one sided -- you can do the old school copper board + mask + etch with something like ferric chloride. It's pretty easy but you do want to be careful as the chemicals are a bit nasty. Newer school is to print the mask and transfer using a laminator. You can also physically etch with a milling machine. It's a bit more expensive but low startup cost if you already have a small cnc mill. You probably have access to one at a maker space. That's most likely the easiest way to go.