Need a trellis? Why not make one using bamboo! A bamboo trellis is functional for some purposes in the garden. The most obvious use for a trellis is as a support for plants that vine. They are also excellent for decoration and privacy.
If you have access to free bamboo, make these simple bamboo tomato cages for just the cost of the twine or wire that holds them together. Need 4 "legs" that are pushed 8" deep to support weight and 8-12 side pieces wired to support legs.