I got tired of having to work with some of my glue squeeze tubes and decided I needed something like a toothpaste tube key. Rather than buying one I decided to see if I could make my own.
Laser cut form 1/8 ply, natural and stained, with a gloss lacquer finish. I oriented the grain of the ply along the long axis of the key, the other direct may work as well since it’s ply. Cut file on thingiverse for anyone that wants to make their own.