Hmmm, a "trailer cozy", that being back memories of everything at my grandmother house with a knit animal cover of some sort

For a trailer I'd go with something like canvas verses a knit one
Yes a couple of posts made from 3/4" conduit would work fine and only cost a few buck. Finding the right ones can be a trick, but for one project with gas strut, I got a pair for $5 at my local "Pick-a-part" wrecker.