I couldn't find anything to protect my tomato plants from the squirrels, so after much thinking, I landed on the idea to build stackable cages that would be easy to lift off as needed. It will take several posts to show how this was done, and I have to say that this took many, many hours to build.
Start by building four identical wooden frames from inexpensive 2-inch by 2-inch, 8-foot-long lumber. Each of the 16 boards used below was cut to a length of 23 inches, then assembled using a corner clamp (see my post on July 6, 2020) and two 1 3/4-inch wood screws per corner. The pair on the right is shown with the screen mesh installed, clipped from larger pieces, then stapled to the frame.