Where I live, electricity is also very expensive. I monitor every watt.
I asked the same question half a year ago, here's what I've learnt: RPis tend to be less reliable and aren't that energy efficient. They're great for small appliances, but for servers (e.g. NAS) not as much.
Get an used Thinclient/ mini PC. They cost something between 50-150€ and give you a huge performance boost, more ports, a x86 architecture, are better repairable (still often bad) and more.
Mine uses about 10-15 W on normal use, and 20 rarely when my cloud is under heavy use.

I think 4 a year is better than 3. With 4, you can just do a quarterly thread, which is easier.
I think the concept of megathreads could be executed a bit better. In the way it is suggested in the post, it's only a poll about preferences and popular choices we all use anyway.
I'm thinking about the idea to make a weekly category collection, where we can discuss specific things in more detail.E.g. "[Weekly thread] What browser do you use? (07/2024)", where we can debate why one prefers Mull over Fennec, what problems we had with Vanadium, and so on.Or, what niche apps we found this month.Or, what FOSS app exceeds it's proprietary counterpart.And so on, and so on. I can give you 20 topic suggestions in less than 2 minutes 😅
This would generate much more engagement and value imo.
And then, we can just simply link each weekly discussion in the quarterly mega thread with one bottom line each.In that way, everyone would have more resources to read further into, and it's more organized.Also, this would prevent routine. We don't need a "Which gallery app do you use, and why is it simple gallery?" every time. We can come up with many new ideas each week, and then, every megathread is different and still worth reading into a few years from now.
Getting more than one vote is simple, too simple. It should be linked with why you think that way and use that tool.Lemmy is a discussion site, not one for popular opinions and polls. I think engagement is the highest priority, both for strengthening the community, and for the SEO to rank Lemmy higher than Reddit some time in the future 🙃
And linking it to upvotes is bad, that's not the purpose of them. We can still upvote suggestions we disagree with, but that are argued good and add value.
Not recognizable enough imo. It will go under in less than a year. What about
[Megathread] Summary of your favourite FOSS Android apps | Community picks for Q3-2024!?Feel free to discuss!