What is the most important equipment for a garage gym / crossfit homegym?

I might have to switch to training in my garage in the near future. I already own some equipment, but I am interested in the other opinions what the most effective use of a small space is and what equipment is absolutely necessary, multiple use, effective and or just plain fun to own.

Here's the list of things I already own in order of importance to me:

• barbell + weights
• jump rope
• airbike
• sandbag
• wall ball
• adjustable kettlebell
• dumbbells (hex 15kg, 22.5kg, but I'd upgrade to an adjustable one)
• resistance bands
• torque tank m1 (a quiet magnetic resistance sled, so you don't annoy neighbors)
• box (for box jumps, squats, other accessory)

I also consider buying:

• rower
• drop pads
• some type of squat rack with a pull up bar

What do you use most often or consider essential in any other way in a garage gym?