My grandchildren love Qixels, and the more they play with them, the more things they think of to make. They have now gone on to make 3D models without any guides.
Good CLEAN fun that keeps them concentrating for ages, just a bit expensive.
A little expensive considering how many you need (the only reason for the missing star)
My 8 year old son loves them and would happily do them all day 👍🏻