I just bought another preowned flap but this time it only came with a box. I used the other stuffings from my other bags to stuff this bag as I don't plan on using it yet. Just realized I'm left with another bag with no more stuffing to keep its shape. I saw a plastic bag, can I crumple it to stuff the bag I intend to store? I usually use pillows, tissue, cloth, even paper but have never used plastic. TIA