I've been busy getting the new-to-me horse trailer all set up for the upcoming Fall ride season. I had bought my old trailer brand new in 1994, and had it set up how I wanted it for storage, securing hay, water etc. I had my tackroom organized the best I could, to carry all the stuff I needed, and many things I didn't need. All the Hi-Ties, bucket holders, rings to hang hay bags worked well. And being a trailer that was no longer "pretty", I never thought twice about adding a ring, having something welded on etc. to make things work.
I removed the bracket that held the spare in place, so I could shove it further back into the corner, and also, I carry TWO spares for the trailer, and will then place the second one next to it, back out of the way. The old trailer had them under the saddle racks which were in the back corner. Still easy to get to, but not in the way. And after moving the blanket rack once, I decided it just took up too much room, and took it out completely. The cabinet on the wall that came with the trailer works well for storage of my leg wraps etc. Not something I would have added, but found a use for it.
It has some storage pockets on the outside too, I also put up a blanket bar in the tackroom to hang a blanket, and an additional blanket bar back in the horse compartment, where I can hang blankets during the ride. (wow, how'd I not get a picture of it?)