I'll second (third?) the suggestion to make your own. We have one that's about 6 x 15 x 4 inches tall that fits nicely behind the back seat in our truck. Standard stuff like screwdrivers, wire cutters/strippers, electrical tape, sockets. I'm sure there's more, but it's honestly not my wheelhouse. The only things that we specifically keep in the PUP are fuses. Just using that kit, we've been able to replace the electric coupler between the PUP and the truck, and were able to rehang the canvas on the small bunkend when it fell down on our first trip out. The good part about making your own is that you can customize it with actual *quality* tools that you might need. It definitely doesn't need to be big- as my partner says, you just need enough to get you through until you get home.