Sometimes simple keeps the hands occupied when the mind is too tired to process any more.
Sometimes simple lets you grab what's on top of the stash and make something that you hope will make someone else happy.
Small crochet afghan for Lone Knitter's collection for cancer patients. Pattern adapted from a Family Circle afghan book which called for a bunch of little hexagons sewn together. Simple said to start one hexagon and keep hookin' till it was time to get more yarn. Even better when you use Project Spectrum colors, but that's just a simple coincidence.