the better ones to keep on hand.
i like the idea of having one of these attached to our dog while camping. i think i would tape it to the back of the harness. then i can know where he is when we are sleeping to avoid possibly stepping on him. he likes to move about the tent at night and we have a big tent.
these are great for extended power outages because they provide decent light and require no batteries. more importantly, they don't pose a fire hazard like candles. as an added bonus, my kids can be trusted with these and if they get lost it's no big deal. 