I work part time (8ish hours per week) Notre Dame’s climbing gym. It’s very much a part time job/side hustle vs. passive income, but I enjoy it and the perks that come with. Pay is pretty low, but most of my shifts include a chunk of time on here while sitting at the desk or climbing a bit on the bouldering wall if we’re not too busy. During my three hour shift yesterday, I spent maybe 30 minutes “working.” The other 2.5 included hours watching NFL/MLB on my phone, Refuge-ing, BS-ing elsewhere online, or climbing myself. There’s also paid time to set new routes which is really fun, and something I’d probably do it for free.
The scheduling is very flexible, and while everyone is supposed to work at least 5 hours per week, the supervisor understands that for those of us with real jobs, we may not be able to work at all for a couple weeks. Perks include free access to the climbing gym and campus rec center for normal workouts, and employee rates at the Warren golf course which is great. Lastly, I caddied a few days this summer which is always a great time.