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.
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i got a small xyron machine. all it does is apply adhesive. i wanted them to be waterproof so i think i put contact on one side before cutting them into stickers. might have laminated - soooo long ago lol

its only narrow but i wasnt going to be sticking big things