A shooting block is an important tool used in reedmaking. NPU sells one for €29, but you can make your own using one of many published plans.
Zexuan has made a 3D printable model of one, and it’s licensed CC-BY-4.0. That means I can host it here. If the original page goes offline, the model will still exist in at least one place. That’s awesome!
In addition, Zexuan has also published a bag template, licensed CC-BY-4.0. I may turn this into an OpenSCAD model anyway, but reusing this design will save me a ton of time. That’s awesome, too!