I responded to a post a few days ago about making repairs on the fly. Now it's occured to me that maybe we could all gain by sharing tips on making repairs and fixing things when we're traveling...so I'll start, and let's see what we can share!
Repairs, what a depressing but really necessary topic. I've had a lot of luck over the years with duct tape and heavy dental floss. Dental floss is AWESOME to have along! You can sew a torn bag or strap if need be, so I carry a needle large enough to handle it...the same goes for repairs to shoes or a rainjacket...emergency shoelaces...one time luggage locks...in a pinch, does great cutting cheese or hard butter....AND if you ever have a drippy faucet in your bathroom, tie a piece of floss around the mouth of the faucet and let the floss hang down into the sink, the water will run silently down all night!