The instructions explain how this toy is both a noise maker and an example of persistence of vision. This latter effect comes from the merging of the colours on the disc as it spins round. Manufactured by Chuft Toys and Gifts Ltd, Stockton-on-Tees, England.
The novelty is that the pen apparently defies gravity, by balancing on the angled plank. Made by Chuft Toys and Gifts Ltd.