With a roommate?

Labelled. Containers.

Every.

Last.

Container.

Needs.

A.

Label.

Get a machine for making those embossed ones and replace them whenever the glue starts failing.

Blankets are cheap bought second hand. Get three times the needed amount. If you have girls over they might want extra warmth and if you guys over they might want their own separate one.

Carpets get nasty when not maintained but it's worth the extra effort cause of the improved heat retention and aesthetic profile of the common room.

If you're not a Mormon/teetotaler supplies and gear for consuming minor intoxicants like coffee tea or smokables should be available even if you don't partake yourself. A moka pot, ashtray (get one that seals up) and teabag box are all cheap and massively improve convenience.

On that subject, be 100% certain how you want to handle weed consumption on the premises. The smell permeates and sticks. (You) might not smell it but others will. Conversely if a roommate exists tell them this ahead of time. Bongs smell heavily when not cleaned after every use.

Fabric wall hangings in muted colors are a simple relatively cheap way to improve perceived sophistication sound profile and heat retention.

Get a knife sharpening set and sharpen your knives on the last Sunday of every month. This will not take a lot of time and drastically improves the quality of life in the household.

A washing/dryer combo might have less space and cost more but it'll fit into most places and heavily streamlines your process.

On that note. Rebalance your wardrobe. When you're personally responsible for your laundry workflow and have less space you need to get rid of anything that can't be worn with at least two other items. Read style blogs to give you an idea. On the other hand a higher amount of undergarments is better for both hygiene and workflow reasons. You need an excessive amount of 100% clean underwear at all times to ensure a good smell profile and when you a small combo machine you can produce this reliably and with ease.

Be extremely certain you make sure the bathroom smells nice at all times. There's essential oil sticks that help with that.

Spare bathrobes & towels for guests are really OP. There's invariably going to be a situation where someone from outside needs a shower and if you can give them the confidence to do so it'll make the place all the more welcoming.

If you have an electronics budget don't spend it on fancy lighting or a bigger TV but a second hand sound system (both 4D or whatever) to improve how well music can be played. Makes things more cozy and can be extremely important if someone wants to have sex on the premises.

Schools churches Etc often sell off foldable tables. Grab some so if you want to host there's space to hold everything.