Weird insect casings (egg or molt?) on aluminium burner bib? Not sure what type of insect they belong to?

Before I begin, I just need to say that I've never seen a single roach in my 6 years in this apartment, so I don't think it's those, but I could be mistaken. As seen in the image, the casings are very small, like 1.5mm to 3mm. I checked the cupboard that the burner bibs were on, and that was the only place I saw these casings. There are quite a few on this one item, about 6, and they all look like leftovers to something as opposed to something that's in the middle of a process. I've been hearing things about bed bugs and carpet beetles (wouldn't really understand bed bugs, as it was in the kitchen, and I haven't had a single bed bug incident either), but I'm not sure. If any of you could help me identify what type of insect these belong to I'd really appreciate it. My pics are over 5MB so Yahoo won't let me upload it, here they are on imgur.

http://imgur.com/a/gyH9N

Thank you!