I'm going skiing in utah on monday and i need to decide which tool to bring, i know that if i dont bring one i will miss it, what would you bring? I have a leatherman charge tti, micra, wenger evogrip, and 2 vixtorninox classics. also i am going through new york and on a plane with them is there any problem with that? they will be in my checked baggage but i want to make sure there is no problem with that 
