I just thought I'd share a simple way of making custom tokens.
These aren't really suitable for professional level quality, but work really well for testing and prototyping.
I print on sheets of 3/4" round blank Avery sticker labels (You could also use colored labels with a B&W printer)
Then stick them on plastic 3/4" bingo chips that you can get hundreds of really cheaply.
Makes a nice sturdy custom token.