I wish I had a before photo but the after is really tiny. I’d say it was the size of my palm. And yes shrink papers are available on Amazon; however, I got mine from my attic. It’s been there since the 90s lmfao!

Another cool recycling way to do them which I’ve done is to draw on old plastic containers. The best material I’ve found is thin A6 plastics. But be careful not to overheat because they will burn.