I loved making the redux tea rolodex model, but it was a little wobbly. Here's a basic brace that clips on with enough clearance for most teas. I designed it in TinkerCAD, so it's not super fancy, but gets the job done.
I sliced mine using the plain model in Cura with a support blocker with a modified mesh using a 112x73x7 support blocker with grid infill and no top/bottom. I also added some basic designs if someone wants a ready to go model.
Layer: .2-.3 mm
Infill: 10-15% (center can be whatever you want)
Walls: 3
The author remixed this model.