Do you have a reference picture? It would really help in giving us an idea on how to approach the project.
But otherwise id ask what kind of variables you want to work with in terms of material cost, tools, and the time frame you are working with.
If you go to tap plastics they have an entire bin of pvc plastic in varying cuts and thicknesses for a $1. If you have the tools and the patience you can cut/mold them to any shape hou need them to be.
When in doubt, just take the next small step.
With that next step take a deep breath. It calms the mind.
When the mind is calm you realize the best is still yet to come.