I just have a power cage, adjustable bench, chin up/dip rack, 300 pounds of plates, 45 pound barbell and dumbbells from 10 to 80 pounds. Also have a ton of slam balls, bands, ropes, chains, a few kettle bells and a full kickboxing setup in the garage for cardio.
I acquired everything used over the last 10 years or so, maybe have $2k in it.
Only use it when i don't want to go to the gym. Was great during Covid, but i don't have too many options.