Take any good set of wrenches, sockets, hammers, punches, screwdrivers, basically and tools. But, if you have the space, any type of drill press, lathe, planer, can be handy to have. If not, maybe any air compressor with accessories.

Take whatever you can , without being greedy keeping your cousins in mind as well, but I would take anything that you can get and or have room for. You may not need it now but one day you might, and you’ll find when you have the right tools for the job, and good organization for them, working on things becomes much easier and more enjoyable. I’m far from what I call a handyman, my dad never taught me anything growing up so as a younger adult I’ve taught myself pretty much everything I know. I bit the bullet and spent a decent bit on a tool box and pretty good quality array of common needed tools, and it’s changed a lot for me. Still takes me 2x as long as it should and about 15 replays of a video, but now Instead of spending 15 mins looking for a 14mm socket that’s scattered somewhere in my garage amongst other stuff, I just open my socket drawer and pull it off the rail right where it should be. Same with hammers, wrenches, screwdrivers ect.