Magical Dish
Recommended for age 6 to 99
Think of rubik's cube in a circular dimension.
Make use of the one gap to push the coloured ball and twist the dish so that the coloured balls fit back into their respective coloured pockets. Example, all the 3 yellow balls should fit back into the yellow pocket and so on.
Sounds easy, what about matching the coloured balls for both sides of the dish?