Small damage is best repaired using clear packing tape. Most drug chains like Walgreens, RiteAide, etc. carry it and you can get large rolls at businesses that specialize in moving equipment, such as U-Haul. The post office has clear packing tape that is slightly thicker, but a lot stronger, for those repairs that need some structural integrity. Packing tape with fiberglass reinforced strands is great for the repairs that require substantial structural strength.