The spring part of the clothes pin can be used to replace a broken carburetor spring, and I have used spring clothes pins to hold wires together. They're great for hot-wiring motor vehicles. Speaking of springs, never head out without a ball point pen. I used them for just that purpose at least two or three times on fishing trips. Never leave home without a good supply of wire twist closure devices somewhere in your gear.
Big twisties are best, because length and heavy wire expand their versatility.
A good twisty can seal a plastic garbage bag full of dry clothes and keep them dry when you dump the canoe. A twisty can secure your two-piece fly rod in one unit when broken down, and you can hang a candle lantern just about anywhere with a long twisty. When squirrelling away outing gear, always keep your eyes peeling for good twisties. Don't save the paper kind. Look for the deluxe, plastic or vinyl-coated ones that come with electronic products.