Snap In Connector (double-sided)
by mechadense, published
A reversible quick connector tho hold bags or other stuff.
The hooks snap in very pleasently and can take quite a bit of force.
You may use it in conjunction with:
Keep the U hooks long and thinn enough to flex.
Print two U-Hooks one Snap-in-Unit and two Lock-Blocks.
The lock blocks should stay in by friction.
If they don't use adhesive tape to hold them in.
Use "customizer" for deviating sizes.