Second this. Vanlife stuff is focused on size, mass, durability, efficiency, replaceability, repairability, modularity, price. There is nothing better than vanlife videos for learning how to live minimally within an apartment.

Some additional tips,

• folding furniture.
• Human baseline happiness returns to set points. Remove something non-essential and you may be sad at first, but will eventually stop caring.
• No couch or TV: if it cant fit on/in my car or is fragile, I’m not buying it.
• if you don’t mind appearing “poor”, you may realize that the products that best fit all the above criteria are just basic things from walmart, target, etc. Those folding plastic tables and metal bed frames, plastic tubs and drawers, actually solve their problems 90% as well as traditional products at 10% the price, while being readily available everywhere. You don’t worry about damaging them either.
• take or leave advice. Maybe you want a nice desk. I have a nice office chair. It will be hard to move, but it’s worth it. The point is you can be minimal in unimportant areas.