It works great!

Works surprisingly well. 2 walls and 20% gyroid infill seems to hold most items well
Prints well.
Common A95 TPU provides a pretty firm grip. I would probably go for a slightly softer TPU next time, to make it easier to insert things.
@buc_1604262 you can try to use the larger version if it is too hard to insert bigger things ;)
Instead of using 100% infill, i increase the numbers of walllines to get a 100% solid print.
I do this because it prints a lot faster than using 100% infill.