In our HTT DH did have enough to build something really large. When we moved stuff into the TT he did a big cleanout. Still won't need most of what he has. One thing not mentioned, not really a tool, is to have a full assortment of whatever fuses your TT or vehicle need. We learned this the hard way....what a pain. Also whatever fuse your electric tongue jack needs...take several of those! Flashlight batteries....you'll need those when you put the new fuses in after dark, lol. DH also has always carried 1 spare set of wheel bearings. Lightweight, pretty inexpensive and if push comes to shove, he could replace a set roadside.