My mom loves it! This has been extremely useful and appreciated. Next time, I'll make some filament adjustments in order to improve layer adhesion (or a different material altogether), as some parts broke off quite easily... but that's on me. A good interface filament could be worth it for this print. If you're willing to invest the time to get the smoothest surface (shortest layer heights and exhaustive calibration), it'll help keep the coffee from staying in the layer lines.

Awesome! I'd recommend using a strong material for the links if adding weight on top; some links stretched just from assembling and adjusting, so I used only one stretched link in the middle. To prevent this, print half of the bolts and one base mirrored; by having chains with a right-handed screw at one end and a left-handed screw at the other, the opposite chirality at each end of the chain allows the whole chain to turn in the same direction to tighten without twisting.

I really appreciate how this was modelled. I had 4x2 magnets, so I needed to resize the holes; the holes were simply negative parts, so I just resized all four (4.20 mm in diameter, maybe 4.10 mm next time). I used 0.12 mm layer heights, so if you change that, make sure that the G-code pause is still at the right layer! Super glue in the hole, transferred the magnet in the right orientation using the hex wrench, pressed down until bonded, then resumed.

Works perfectly for my Z Flip 5. I made a few tweaks when printing it for the first time, partly to play it safe with the overhang walls (variable layer height, arachne, 3 walls, thick external bridges, extra bridge layers, reverse on even, 300 mm³/s² extrusion rate smoothing). I wanted to test using PLA first before printing it with TPU, but since it came out so well, I think that I'll just stick with the PLA case for now.