righto 2 easiest options.
1. A xyron machine. Come in a range of sizes. Can get them from craft stores and department stores. From abour $15 I think. I have a big one that's about $100 but it also laminates, makes magnets or laminates one side and makes the other sticky etcetc.

2. JAC paper is double sided adhesive paper. easy enough to get so you could print out what you like and then adhere it to the paper and cut it out. bout $2per sheet from memory.