Both of the tack trunks I inherited are steamer or luggage trunks. Both have been in service for ~50-60 years and quite functional. I don’t know if they were original or not, but both have a tray ~5" deep.
As far as refurbishment, the only work I’ve done on them is painting the exterior & I replaced the paper lining in one (used wallpaper). Oh, & I added a 1/2" piece of plywood to the bottom of one because the bottom was gone.
As far as moving them, it’s not God awful. One has always been in my house, under the TV. It only has bits & old shoes so I don’t get in it much. The other I had at the barn. It got there in the back seat of 2000 Corolla. Empty it wasn’t too heavy. I don’t show, so once in a barn it stayed in one place.
One is similar to this (first picture), the other one like this (Imagine it Rustoleum hunter green).
Since they were in a garage for the entirety of my childhood, I couldn’t get upset about exposing them to barn dirt. It didn’t seem to hurt them.