I saw this on Amazon today as a limited time deal. These magnet tiles make excellent TTRPG and wargaming scatter terrain. You just need to prime and paint them to look like stone or metal depending on if you're using them for a fantasy or grimdark setting.
https://www.amazon.com/Jasonwell-Magnetic-Preschool-Educational-Construction/dp/B07WHX21D8
here is a YouTube video showing what converted magnetic tiles look like when painted up and with some drywall tape and cut up bubble wands added for texture.
