I ordered my kaleidoscope as a gift, but kept it for myself, I loved it so much! Simple tin tube, and the moving parts are simple plastic beads, but the patterns produced are truly lovely, and colours are fab.
There is something very soothing and calming about looking through a kaleidoscope, everyone in my family has had a go with this toy over Christmas, and they've all said the same.
So - get happy - get a kaleidoscope! At this price, you can't lose!