I've being doing these for a while, instead of the sticky dots that fly off when you hit them or get close, I lay pennies or dimes on the paper then spray. When it dries, remove the coins.
Ha ha! If you ever get tired of painting your cash, just go to your local Home Depot and buy one metal electrical outlet box(so cheap you can buy it with the colored coins, lol) and take a small hammer and screwdriver and punch out all the 3/4” and 1/2” round tabs. Use those instead for the paint templates.
If you want super free, ask an electrician buddy to save them for you. In a day he’s probably punched out a hundred of those. Those things are all over a job site floor!