An A-frame trellis gives tomatoes or squash plenty of room to climb—and at the end of the season, can be folded flat for storage.
Constructing one requires only some basic hardware-store supplies and an hour or so:
Make the 8-foot-long frames from 2-by-2s.
Reinforce the corners with metal braces, then link the two sections together with 3-inch cabinet hinges.
Finally, use fence staples to attach 6-inch wire mesh to the frame.
Soon, you'll be swimming in tomatoes.