If I have some spare compute, are there ways I can use it to help an existing fediverse instance?

I don't know a ton about the internals of federated systems, it's been on my todo list for a while but it keeps getting pushed down by other things. But I still like that the fediverse exists and I'd like to pitch in, even if it's only a few bucks of processor time / month.

Are there compute tasks that could be offloaded to a network of volunteers? Monitoring tools that could be run from outside the system? Something else I'm not thinking of?