Where I started taking lessons they have saddle and bridle racks per horse and are clearly labeled. The saddle pads are laid over the saddles so it's pretty clear.
For grooming supplies, they're just in a bucket on the floor and I grab the brushes I like best.
Interestingly enough, my trainer helps me tack up. Not because I don't know how or am too slow, but just because she wants to. I try to do it myself but usually as I'm finishing picking out the hooves, she's there with the saddle! LOL