they look like larvie from an insect. it has been known to happen. i remember some one on here trying to figure out where these strange bugs were coming from in his house. turns out his new LR had some eggs from an insect, and they hatched.
it could be some type of worm as well. but will need a better pic for a positive ID. im thinking a little peanut worm, but i kind of see segments. hard to say.