I have been looking to make a trash can for my husbands truck also. He wants one that will sit on the floor not hang. Thought of putting a rice bag in the bottom but can't figure out how the thing will stand up. I have scoured the internet and they all hang.
I used my old thread catcher for my van. The rice pocket keeps it in the cubby and is just the right length. I put in a small plastic bag so the fabric never gets soiled.