Small things like cucoons with little white caterpillar with a red head on my guest room wall?

I went in there to clean up and I found that these little grey speckled things on the wall that I had believed to be very moths but I saw a little worm like things coming out. They're very tiny about 1cm long and the worm /caterpillar thing inside is very thin with a completely white body and a red head, its pokes it out has a look round and any disturbance makes it shoot back in again. Any help in identifying these would be great Thanks in advance.