Personally I think a little fiscal conservation would be wise at this point.
Costs can, and do eventually, rise. Hardware fails, and other things can happen as a surprise; and I'd rather that Beehaw not be insolvent when those things happen.
While I get the wish to do fun things to enhance the community; I think we need to be keeping an eye on things too. A few bad months where users are squeezed and unable to contribute could also severely impact Beehaw; particularly in and around monthly costs. At no point should Beehaw admins be paying out-of-pocket for things if Beehaw itself as an organization has the funds to properly pay things.
If we do genuinely have too much funding in excess; examining how we could expand Beehaw or make it better is another way you can responsibly re-invest the funds into making Beehaw better.
Additional servers/services might be neat; things like:
A Mastodon server, if one doesn't already exist
A Matrix homeserver, if one doesn't already exist
A lightweight Pixelfed / image hosting/posting Service, if one doesn't already exist
Various and miscellaneous game servers/services like Minecraft or other popular multiplayer game servers/sessions/instances.
Of course such things could also require additional staff on hand, so I understand that you might want to entice someone to help manage these extra things first.