It's been years. . .
but aren't targets still available on the computer and a computer printer.
But then I'm so cheap, I use small stickers from an office supply store on my homemade targets. I've used them for nearly twenty years, it seems.
Once in awhile I'll take half a sheet of computer paper and put a small, less than 1 inch, sticker on it. I figured if you couldn't see the small sticker, you couldn't see anyways, to shoot real small groups.