This tool can be used for removing permanent wristbands for festivals, conferences, etc.
Just slide in the curved end from the wrist side and pull the strap
You can edit the original in OnShape here:
https://cad.onshape.com/documents/db7f1a7b423648caa2006109/w/b8755e72186cd6a5717b60a3/e/bae487f796b0702f7c7de758