I use the green plastic fence usually kept next to the chain link fence at Home Depot. You'll have to stitch lengths together if you are going to do a wall. Get a ton of cheap zip ties from harbor freight, lay your fencing pieces out (use a heat gun if they won't lay flat) and attach the lights. It takes forever, so I usually watch a movie or have some beers too.
If you make it modular, you can just unplug the sections and roll them up for storage.
Mike E.
Heres a pic of some strips of fencing I used: