Tight space, tight budget: The floor, a 2 meter pipe secured overhead, enough clearance for muscleups if possible, and some old trucking straps or 2" webbing. Feel like Clubber Lang.
More space and $: Rack. Oly BB. I have a standard. Oh well. Dumbells up to wide bench requirement (dont understand guys who want to fuck around changing plates on dumbells). Light bands for YTW prehab. Yes, you still want a muscleup bar.
You have too much money: Tapeworm's Awesome Infinitely Variable All Angles Optimum Resistance Curve Peak Performance Trainer with the Sustanon Drip option. Wise investors welcome. And our patented Spirit of Muscleup knurled titanium Death From Above Calisthenics Pro X8000. Comes with bolts. $899.