I love to draw monsters. In times of creative blockage or atrophy, monsters are wonderful therapy. You can’t really draw them wrong, they can be as serious or whimsical as you want, and you can take unlimited creative license. It also a good opportunity to try new art supplies, or simply to fill up a sketchbook page.
Here are some monsters I began drawing in a sketchbook sent to me by the fine folks at Art Alternatives. The first three were off-the-cuff monsters, and the fourth was for a friend, whom requested a rabid caterpillar. (note: the first three were colored with highlighters, which scan terribly. The caterpillar was colored with Prismacolor Premier Design Markers, which scan beautifully.)