I am looking for toys that could be called educational. They could also have an ecological or otherwise earth-friendly theme.
Ideally, the toy would more a line than a single toy.
Preferably, the designer or inventor should already have a prototype and patent (or have initiated a professional patent search).
Regarding the above, I can be reached by private messages me through core77. If that doesn't work, I can also post contact information.
By the way, please let me know if this is the wrong place for such a post.