Hello,
Sorry I am now using flickr, which this website seems to support. I found these skin shells in my new apartment. I am leaning towards larvae from beetles (note: i have no carpet).
I'm slightly concerned about the brown/red seed looking thing because of its horizontal lines. It was very round, I thought perhaps it was the back of a fed, adult bed bug. No blood came out. White stuff did. It has NO legs whatsoever.