It really depends what you are using it for and how safe you want to be.
You could just use syncthing to keep a directory on your laptop synced with your home desktop. Still goes down if your home burns though.
You could do it with your friends house if you don’t mind him being able to see your stuff. You could even have backups saved somewhere else.
It’s a lot of work and cognitive load for the average person though.
It’s a fundraiser likely for an after school program. It typically pays out a lot better than a car wash or brat fry. Typically the students run orders out to cars.
And yeah, we probably should put more funding into schools for stuff like this instead of asking kids to fundraise.