Crayola Colour Wonder Magic Light Brush £9.97 in tesco
wish I had waited, paid £19.99 for ours a few weeks ago
Brush lights up to reveal the colour of the clear paint. Colours magically appear only on Colour Wonder paper. This Crayola set comes complete with 6 paint pots and 30 page pad. Requires 3x AA batteries Suitable for children aged 3 years+.