Hot, convenient, and cheap. I never leave home without them. They aren't just for babies in diapers. It is a good substitute for sewing thread. Also can be used to replace a broken shoelace.
Several strands make a great clothes line.
It is easy to carry because it comes in a compact holder. Don Large leather tote with zipped or snapped compartments and pockets. Sturdy enough and large enough to hold almost anything. Doubles as a handbag. Starts each trip almost empty and invariably comes home packed full.