I'm building a gym in my garage so i can train when i'm not at my boxing gym. Just need some input. I got a heavy bag, weights, skipping rope, dont need a speed bag or a double end bag, got a slip bag, some rope to practice weaving, a mirror. What else would I need?

Also how many of you have built a gym for your self in your house or garage. and wat do u got in it? thanks.