The most obvious option is to donate. For those that are unable, are there other ways?
I found a donation page for the mastadom instance but not for lemmy.
@[email protected] you can contribute to discussions and report posts/comments that don't meet the community rules.
@[email protected] here's the Ko-fi link: https://ko-fi.com/jonaharagon. On Jerboa you can scroll to the top of the community page and there's a button for sidebar.
Just a note that on the version of Jerboa I'm using, the sidebar is actually called "site info" and it's in the menu options accessed from the upper right.