Strongly suggest looking at Schneider’s supplies. They have a lot of really good basket-type things. I have bridle hooks, some baskets with hooks underneath, and a folding saddle stand (not Schneider’s).
You don’t mention other riders, but I put up enough that every boarder gets one “basket”. Mine also serves as my wash area, so we all have our bathing supplies and topicals in there. I’d love shelf space, too.
In my old barn, I had 4 high shelving (the kind you get at Home Depot) along one line, and we all have our own “shelf.” Be sure to secure the shelving to the wall if you go that direction.
If you have a little cash, consider putting in some infrared heat lamps (if it is cold in your area). That’s going to be my next big addition when I am prepared to invest some more in the barn. Last year we did arena mirrors, mag flakes, and 6 truckloads of limestone dust to eliminate mud, so I’m pretty tapped right now.