I carry a small fannypack. In it I keep spare batteries, a compass, pencil, paper, pen, plastic baggies, pencil sharpener, whistle, small flashlight, small retractable mirror and small trade items. If I am going on long hikes in the woods I should have something to start a fire and first aid kit just in case. The paper and baggie is for those logs that are wet. I sign the paper and leave it inside baggie, then put it in the cache. This buys the cache owner time to replace log and allows other cachers to sign log. One time I found a cache that got soaked and froze solid. If not for my supplies I would not have been able to sign log.