I'm looking for new or used (but clean) padded shipping envelopes for books.   It's okay if they already have used labels on them.   

The older brown ones with padding are okay, or those made of bubble wrap.   I need sizes over about 12" x 10" (I have lots of the really small ones).

I can't use USPO priority mail envleopes, though.   

If you have some just sitting around, please let me know and I'll swing by and pick them up.

Thanks in advance.