I've got a few hobbies that I'd be interested in getting into if I ever have the money / space / time for them. High end and custom PC building, for one. Being able to afford the bleeding edge of tech, and also being able to do some of the projects I've dreamed about for a while easily. Getting the parts to build an emulation rig in the case of a GameCube (I'd go for a nonfunctional console, of course - not going to destroy one of an ever-decreasing amount of working hardware.) wouldn't necessarily be the most expensive thing out there, for example, but the time investment would be... somewhat hefty.
Second? Learning what I consider the interesting parts of manufacturing. Lathe work, laser cutters, machining, PCB manufacture, 3D printing, and more I can't think of at the moment; I find all of it incredibly interesting and I would love to know more about it (though I've done 3D printing in the past, it was all on printers that didn't belong to me, and I don't have the room for one right now), and would love to assemble something that I've built every part of - a keyboard, some sort of fidget toy to help manage my nervous ADHD energy at work, some sort of robotics thing. I don't exactly know, I just find the processes interesting and would love to do more of that work.
Last one I can think of at the moment is that I kind of want to give learning coding another shot. This one is easily the most achievable of the 3, for me, at the moment. The only issue is the time investment necessary in learning to code - around my current job, and some of the uncertainties I have at the moment around the temp -> perm employee conversion process I'll be going through for the next couple of weeks, I don't really have much time to focus on something that would be as time consuming as learning to code. Maybe in a month or two, once things have settled down, and I'm back in my groove at work and can focus on more time consuming hobbies, I'll be able to actually sink some time into this one without worrying about whether or not I'll need to start job hunting again.