That is a hard one, you might look into ope source drive solutions, but that would require some setup and if you use a lot of space then also money.

To answer your question, I don’t endorse the following solution, but I think it would still be 1% better than using Discord: If you already have Telegram, you can use Whitehole.

Q: Can I donate?

A: We appreciate that people want to support us, but we never have and never will accept donations. We maintain this project because its fun and we want to help others, not make money.

Via their FAQs.