I think there was another forum like this so if I already answered some time ago forgive the repeat.
I always have a SAK Classic SD in my pocket. This little thing saves the day several times a week. Sometimes I also have a Benchmade Mini Bugout.
Upper left, New York Knife Co Hammer Brand 3515 I'm carrying as far as the shop for a little re-profiling on the two broken tips. The little Camillus 21 pony jack will be in my coin pocket all day. The upper photo gives the impression it's a big pony. Nope.