Paulie the Propagator Ball (Pair of Halves)

I'm remixing the Polly the Propagator Ball designed for a 20mm branch — itself a very nice 3D-printable interpretation of the classic air layering pod/ball/box, a version of which you can make by recycling any appropriately-sized plastic container (see video below). For Paulie, we've got double the balls in this file. We've added a living hinge. You can close it up with 4mm zip ties also, but you can also close it up with two of the original clips from Polly. Remember if you resize the file to suit a differently-sized branch, you should resize the clips (zip ties might no longer fit). For v2 of this file, I’m reworking it in a few ways: adding slots for zip ties along the center where the living hinge is (for the eventuality when the living hinge breaks, you can create one with the zip ties) as well as adding some slits along the flanges so that this can be closed with twine instead of using the other options.