Homes get hit with dirt year round by storms of all kinds. Ever considered power washing homes on the side? You don’t have to go all out and get a high gas powered pressure washer, but you should consider investing a few bucks in a decent one. Browse what’s available at your local hardware store. Lowes and Home Depot have a pretty large selection. I would talk with staff in regards to the PSI and safety of the job you’re doing. You don’t want to end up with a crazy high PSI washer and end up punching a hole in someone’s siding.
Light duty pressure washers usually plug into an electrical outlet and an outdoor hose and you’re ready to go. There are tons of folks out there that just don’t have the time or energy to wash down their house. Power washing a house typically starts at $200 for a one story (depending on the area). The price can grow exponentially with additional services like window cleaning. If you really want to go all in, you can offer a quarterly or yearly contract service as well.
You don’t have to spend a lot on advertising either. Just print up a few postcard-sized fliers and stick them in your neighborhood mailboxes. If you can shill out a little extra for the cost of the envelope, I think people would be more surprised they got legitimate mail for once.
Good luck side hustlers, and I hope this idea works for you.