Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4301748.

Mask-Clip: Strong but Simple and fast to Print buckles for all kinds of straps or rubber bands. Just scale to the desired size and in any case print with sufficient support.

Clip V3: An evolution from the first one, its better scaleable and more optimised, printable without support. Its possible that you need to bend the front apart after printing.

Use a raft if u have stickyness problems.