Shaved ice is a popular thing down here, and in Hawaii. It's a really good money-maker business, too. Afterall...the main ingredient to make it is dirt cheap! One family in the area started their own shop on a main highway about 5 years ago and regularly have people standing 6-8 deep in line waiting to place their orders. They don't sell the various sizes cheap either! That same family has so far sold 4 franchises to other people in surrounding cities.
Shaved ice is
much better than a snow cone, according to people who've tried both. It's not little crunchy ice crystals. It's much lighter and fluffier, and melts as soon as it hits your tongue. I sometimes set my machine up on my front porch and invite neighborhood kids (and their parents) to bring their big insulated cups and come over for freebies during summer. I've also taken it over to friends' houses to do shaved ice for their kids' and grandkids' BD parties.
This is the machine I have, but it was less expensive 4 years ago. You can make a bunch of shaved ice pretty quickly! After using it a couple times, I bought a foot operated motor controller for it. Now I can use both hands to scoop and shape the shaved ice, without having to manually stop or pause the motor.
https://www.amazon.com/Great-Northe...rds=Shaved+Ice+Machine&qid=1603778997&sr=8-21
Doing shaved ice as a small, side business during summers, even where you are, could be a nice, easy way for anyone to get extra income. The investment wouldn't be much either for a machine and the supplies.