Another option for you is to go to the local home improvement store and find the materials for a “V-Flat”. You have a couple of options here; two 4×8 panels of wallboard, you paint the back sides of them with flat white primer, hinge them with tape, and they will stand up nice… or lean them against a wall, or even take them outside and use them with cloudy daylight. Want it wider, ad a panel and hinge and make it a “W” instead of a “V”. Or you can turn the panels sideways sometimes, if you have stands or a ladder to support them.
Option two is to use 4×8 foam insulation panels from the same home improvement store. Hinged with some duct tape or the better, metallic, air conditioning duct sealer tape, this can be self-standing when posed as a “v”. The foam is vulnerable to solvent-based paints, but you can use inexpensive water-based latex paints on it. That seals the foam and then you can throw almost any paint over that if needed. I recommend Kilz brand latex primer on foam.
There are tons of youtube videos out there of photographer tips on making and using a V-Flat. They make great bounce light sources as well as backgrounds in their own right.
Old story, but I once shot a video where I had to do three different locations -in the studio- and I did it with just one, 20-dollar, 4×8 piece of rec room wallboard, the kind with a fake brick surface. While at the store, I also picked up a one-roll sampler of two different kinds of wallpaper. Scene one, “the alley”, I just used the brick side normally, as BG for a close-up of the actor. Scene two: the kitchen, I put the wallpaper sample on the back side of the 4×8 sheet with 3M-77 contact adhesive spray, added some ceramic ducks, a calendar and a framed photo to it with magnets, bam, ready to shoot in ten minutes. Scene three; turned the 4×8 sideways to use as background for a tight 2-shot, used the second roll of wallpaper sample. But roller-ed or rattlecan spray paint, directly on the back of the board would have worked, too.
The wallpaper samples were, I think, $5 each so my total outlay for three “sets” was around 30 bucks.