Your barn is gorgeous!
We had to modify a dairy cattle barn, but ours turned out pretty nice.
My dad's pretty handy with a welder, and he made halter hooks out of horseshoes for me. I don't have pics, sorry, but picture one horseshoe, open side up, with another half-shoe welded to the bottom arc, and painted glossy black. I have one closer to the door for Scout's turnout halter, lead, and fly mask, and one at the other end of the front wall near the crossties that I hang a nylon grooming tote from. Really handy, and the tote is ready instantly to go, if neccessary.
Leather tack, I like round hooks or rings. It saves the leather, you don't get a "peak" in the crown of your halter or headstall.
Also, we have homemade wooden name tags. Cutout letters wood-glued to a base, then laquered. I've also made woodburned stall plates for my grandmother's barn.