After making my first plushy, a cute banana slug, I got the idea for making (don't laugh!) a worm (OK, you can laugh!) from Sew Me, Love Me: Best Stuffed Friends to Make by Hsiu-Lan Kuei:
Isn't that a sweet title? I fell for so many of the critters in her book, including her worm. I ended up making mine an oversized worm, because that worked better for the recycled cotton terrycloth towel I used for my project: