At dollar stores or shopping after the holiday clearance sales, I try to get a couple of the decorated lightweight disposable tablecloths and store them in my box of gift-wrapping supplies.
Many times a gift or the box that the gift comes in is too large for the usual size bolt of wrapping paper, necessitating piecing several pieces taped together to cover your item. I get out my disposable table cloth, cut it to fit (I always have a lot more left over) and tape it. The lightweight flannel-backed cloths are also very flexible. Clear packing tape will securely hold the wrap for the heavier weight cloths.