Mister Monster. Assemble monsters with the elements from the palette.8 monsters to practise on create the funniest or scariest monster and print them to show to your friends! Mister monster is a great tool for teatching drag n drop!YooGlow. Stick little bulbs in the grid and create pictures. Express yourself in a simple interface. See the result of your creation really quickly on the screen. A free expression tool accessible for all ages.