Colorforms were pretty simple- they were vinyl stickers that stuck to a shiny mat using static electricity.
And they were awesome!
If you didn’t have some kind of Colorforms set as a kid, I pity you.
The WWF Colorforms set includes wrestlers, accessories, and their logos that you can stick to a scene showing a wrestling ring in an arena.
It’s about as low-tech of a toy as you can get, but you could get hours of play out of these if you had an active imagination.