An umbrella with a floppy broken rib, that’s what you don’t need now that it’s rainy season. To fix it, use dental floss to reattach the fabric portion to the rib. Simply cut a few 2″-long pieces of dental floss. Using a sewing needle, thread the floss through the fabric part of the umbrella, then tie it back to the spoke. Now, your umbrella is ready for use again.