What can I do with these extra Minecraft rooms?

I'm on Minecraft p.e. Survival Mode and I made a large six room house, three on the bottom, three on the top. The middle one on the bottom is a living room, and the other two rooms on the bottom are empty. The ones on the top are a chest room (I have a multiple chests with lots of inventory and each chest is sorted so yeah) then I have my room, and then I have a guest room if I want to have a multiplayer. It's on survival and lets just say I'm not a super skilled crafter so I'm not sure what to do with these two empty rooms?

Make an enchnatment room just remember bookselfs, and for another room I would say an alchemy room with different chests for ingredients and an ifininate water source too for the last room a master bedroom or a guest room

Don't listen to the other guest Kk enchantment isn't possible (yet) and brewing ain't there yet either. BUT the infinite water source will help and 1 more bedroom might be smart too! Try, instead of the alchemy (brewing) a bar that can be modified to become a lab, alchemy room, or brewery. Whatever you call it! Think, you can make anything in minecraft (almost) so be as creative as possible!

I'm the second guest here btw! :3 have fun and don't be afraid to do other things too!