These foam blocks hold together better if assembled on a metal or magnetic plate. Edushape also has a set with smaller number of pieces, but with a baseplate included.
![Edushape Magic Shapes Edushape Magic Shapes](https://buildkitpedia.com/wp-content/uploads/2023/08/edushape-big-3-1024x1024.jpg)
These foam blocks hold together better if assembled on a metal or magnetic plate. Edushape also has a set with smaller number of pieces, but with a baseplate included.