Color Writer (Hasbro, late 1960s)
The Color Writer was a cross between an Etch-a-Sketch, Lite Brite and a dry erase board. It looks very similar to a Lite Brite, but instead of pegs, you just draw on the blackboard with a pen. A light bulb showed your drawings in a rainbow line. When you wanted to draw a new picture, you wiped the board clean with the eraser and start again.
Color Writers are extremely rare and collectors go crazy for them!