Chalkboard painted base for creative play. Japanese Kiko + makes wooden toys , like this mini-city with famous buildings from London. The black tiles are painted with chalkboard paint so That You can paint your own roads.
This project is not for the average DIYer as it requires access to a CNC machine to cut the pattern in the ply. But if you have a very good hand and an equally good jigsaw you should have no difficult (Diy Furniture Building)