The Magic Switch Cube

This is a magic lego box which can transform one rounded tile to another colour rounded tile. It has 2 components: an inner and an outer box and it also comes with 2 red, yellow, green, blue, pink and gold rounded tiles, to change whatever colours the owner/player/builder wants. It is a symmetrical build and does not contain any tough-to-use parts like gears or axles. I would say it to be for 9+ yrs for them to actually understand how it works.