UPDATE 10 March 2020: By request, I added a version that holds a TBS SMA adapter (there's holes for the screws to secure it, but you'll need to melt away some TPU so they will clear the antenna connector, but you really don't need them anyway), and another one that holds 2x (non-TBS) adapters, and because sooner or later someone will ask, I made one for a single non-TBS SMA adapter (hello, lucky Vista owners). I also made one that doesn't have any SMA adapters, but has slightly longer "arms" that you may be able to flex to fit different standoff spacing if you aren't using a SuperG/SuperG+. I haven't tested it, it might work, it might not, I don't know what range of spacing it will fit, but it's there for you to try if you want.

Here is a holder for the BrainFPV GPS unit. It is sized to fit the SuperG/SuperG+ from Project399 (20mm standoffs 25mm apart). Might fit other frames that have similar standoff layouts. Secure the GPS with some double-sided tape on the bottom of a small bead of Goop or hot glue in the corners.

Print instructions

Meant to be printed in TPU (and that is what the gCode file is set for), but would probably also work with a rigid filament (though it won't be nearly as resilient).