PVC Garden "Pots" -- On b organic with michele beschen episode #212, a CSA had lots of unique planting methods that were inexpensive, deer- & weed-proof, AND accessible to someone in a wheelchair. PVC pipe (10’ lengths) cut into 3 equal pieces, secured in the ground with a piece of rebar, and filled it with soil were used to plant all sorts of vegetables and plants, 1 plant per "pot". Each plant took just one cup of water per day to thrive! Here is a similar idea on a DOT government website.
Cover to keep squirrels & rabbits out of raised vegetable beds. It is made from 1/2" PVC pipe, PVC fittings & chicken wire.
The Garden Stick. Great idea, just need to figure out how to make one, guessing large PVC piping with fittings filled with soil, per haps something to stabilize it so it doesn't blow over? I've see one's smaller then this but none that were this large.