OP that's not that tall. Something as simple a cardboard. Stack sheets of cardboard the height and width you want and put foldable wings on either side to space it from the wall and to stand it up.. 1/2 - 1" thick should do.
Leave the top open. Prime and paint it with crinkle paint or a hammered finish.... I say 10.00 usd for the whole thing.. Move it when your not using it.
Regards
Leave the top open. Prime and paint it with crinkle paint or a hammered finish.... I say 10.00 usd for the whole thing.. Move it when your not using it.
Regards