Survival Sub-server Build Suggestions?

Hello those few people reading this! So on the survival sub-server, I pretty much ran out of ideas on what to build. I have already built multiple things that people suggested and yes! I need more! I just finished my 200 double chest storage space which only took me about an hour, a giant platform that I'm in the process of taking down and I need more please! If you could kindly leave your suggestion in this thread and don't worry, no suggestion will be judged(unless it breaks a rule or is not deemed appropriate by staff).

Disclaimer: I may not get the time to build all suggestions. The most reasonable and resource efficient ideas will be priority.