Indoor rock climbing for me, mostly bouldering these days as my friends have become flakey but started with top rope/lead and would like to go back to it.
Home automation stuff. Temperature/humidity measurement in each room, lighting control, appliance control. We have on-site water supply from our roof and on-site waste treatment so I have monitoring and control on that for tracking performance of water/air pumps and filters etc, weather station, A/C control, and just this last weekend I finally got around to installing and plumbing in the irrigation controller I built. I tend to prefer the parts of it where I’m designing/building electronic widgets rather than buying/integrating stuff.
Gardening. We have quite the selection of plants, ranging from indoors to pots/planters on our deck to a hydroponics system to raised garden beds outside to hardier things direct-planted, as well as 10 acres of native forest. Indoors we have a couple of coffee trees, banana palms, a bunch of 3-4m long rhipsalis, ~20 orchids of various kinds, all sorts of stuff. The hydroponics is an NFT setup that’s mostly used for lettuces, basil, pak choi but I’ve recently added some thyme, spring onions, strawberries and other stuff into it as a muck around. The deck is a mix of full-size and dwarf citrus (Tahitian lime, Bearrs lime, 4 different lemon species), camelias, jasmine, a ginkgo, a blue eucalyptus and a bunch of flowering ornamentals. Long term garden beds are asparagus, 5 varieties of raspberries/boysenberries and a bunch of long lived herbs. Annual garden beds are currently tomatoes (~16 plants, enough for a year’s worth of pasta sauce), eggplant, zucchini, peppers, broccoli, corn, beans, carrots, rocket/arugula all interplanted with flowers like sunflowers, cosmos, zinnias, petunias, celosias, etc. We have planters with 6 different types of bougainvillea in front of the house and a retaining wall with 4 avocado trees, figs and feijoas. We have a beehive out the back, too, although I don’t do any of the management of that.
We roast our own coffee and have a nice espresso machine that I spend a bit of time tinkering with.
On top of that, I’m one of the admins for the 2 largest electric vehicle facebook groups in NZ so spend a decent chunk of time alternately dealing with trolls and helping people make the transition to electric transport.
Edit: Oh, and online gaming with friends. ~30k kills and 2.0 k/d in Apex Legends but mostly playing Helldivers 2 with friends currently.