This is a simple zip tie anchor
Print as needed.
Thread zip tie threw hole
Stick double sided foam tape to the bottom and attach where needed.
I found this tricky to print. If you use support, the support is really hard to remove from the inside. And I don't think they are possible to print without support.
Is somewhat parametric, but I haven't tried to scale it. I only wanted it in this size. Something for someone else to base their on.