Do you always seem to have cabbage moths attacking your brassicas? Do rabbits or squirrels harvest your plants before you do? Use a pop-up hamper to protect your plants from insects and rodents. You can simply place it upside down, with the opening above the plant. Use garden staples to hold it down, or even some rocks. To help secure against insects, bury the bottom under soil or mulch. The mesh is fine enough to keep most predator insects and rodents away, while allowing good sunlight through. If you do live in a very sunny area, however, this can help to provide some shade from that sun as well.