This is a bit silly, but perfect for the Sunday afternoon.
Here you can make your own kaleidoscope. It is very easy: you only have to pick a color and a shape, and then draw something. It’s fun, because you can’t fail, it always looks magical.
If you’re still bored or in a creative mood: It’s also possible to make your own kaleidoscope (beautiful word by the way, don’t you think? It’s a combination of three Greek words:
kalos, meaning beautiful;
eidos, form; and
skopeo, I see).
Here’s a scan from Popular Science magazine with the instructions, from 1944!