PVC is one of the most useful tools for DIYers. You can make so many things with this plastic piping.
Gardening apparatuses are no exception.
You can drill holes in the pipes and create rows of planters, then you can mount the rows on structures (also PVC) like shelves, stakes (or you can use wood), trellises, triangles.
You can cut the PVC into foot or several-feet long sections and plant those upright and put plants in the top, so those plants can reach above the rest of that section of garden. You can cut think sections of the pipe and make bubble like walls or hangers. You might need some tools for this that you might not have. Check out Buyersimpact.co.uk/ if you’re interested to read some reviews about garden tools.
You can drill smaller holes and make a custom watering system.
You can cut them in sections and plate one round about waist level, another on the base level, and put tools into the holders.
You can build greenhouses — use the PVS as the frame, use wood as the shelves, and use Poly as the walls and roof.