We originally used two buckets to keep our dirty shoes off our Aliner floor, which worked much better than nothing, but was a bit awkward, since we were putting them on and off all the time, and the buckets were never in one place, and never fully out of the way.

Photo of the side of a black Aliner couch showing a
cut-out in the side with a white visible shelf. There´s a
blue and white whisk broom in the lower section.
We ended up hacking a hole into the side of the dinette couch base, next to the Aliner door. This was scary — but it turned out amazingly well, and we love the convenience.
It´s probably our favorite hack of all.