It's the only toy in the house that lasted the test of time from she 4-8 (and counting). Also I love tidying up Magna tiles, even that is fun!
My oldest kid got a small sample of Clixco and was surprisingly entertained even with a limited set of possibilities they offered. They're great fidget toys as well.
[0] https://en.wikipedia.org/wiki/Mach%27s_principle
[0]: https://philosophynow.org/issues/133/Einstein_vs_Logical_Pos...