My first year I took enough tools to rebuild
if necessary. Air tools, big sockets, etc. Looking back it was a little foolish as it was a lot of weight and took up a fair amount of space.
I have pared it down quite bit but I do have multiples of things used topsides quite often. These are things such as nippers, pliers, and all sorts of sizes and types of screw drivers. Why? They seem to jump over the side on their own quite often.