A long wall of high quality adjustable power racks with Olympic lifting platforms and adjustable incline to decline benches for each one. All racks also have a chinup bar built in.
Another wall with glute ham raise/reverse hyper extensions machines.
A wide variety of bands, chains, and weight releasers for accomodating resistance.
Sturdy, adjustable boxes for stepups, box squats, and whatever else you want to use them for.
Kettlebells up to 100 pounds or more and medicine balls, both the kind that bounce and the kind that can be slammed, going up to as much as 50 pounds.
Weighted vests up to 100 pounds or more.
Dumbbells in 2.5 and 5 pound increments all the way to 150s.
Blast straps, stability balls, wobble boards, and airex pads. Yeah, I know people think they're lame, but they have their uses dammit.
The ab wheel. Those things are badass; I don't care what you say.
Cable machines for pulldowns, rowing, and a double cable stack for whatever.
A weight sled.
Jumpropes, punching bags, and gloves.
Foam rollers, mats, and nylon straps for certain stretches.
That's all I can think of right now...