lol, I was the crazy dog person in my apartment. I'd go out to the tiny patch of grass in our complex and run weaves or jump sequences.
I used just thin wooden dowels stuck in the ground at one point, too. Cheap (about 40 cents each), not a problem if they get broken (duct tape!) and if you're worried about visibility, you can paint them blue or yellow (or use blue or yellow duct tape ).