You want to fix your FrSky receiver, vario or sensor onto your model plane properly using a holder, a case or a box, here are a few options.
Click on the link to get to Thingiverse for downloading and 3D printing the item you’re interested in:
On Thingiverse, there is also a version without the antenna attached antenna bracket. Designed for fixing with screws or with a Velcro strip.
Link to Thingiverse
Designed for fixing with screws, with a velcro strip or glue.
Link to Thingiverse
Case designed for fixing with a velcro strip or glue.
Link to Thingiverse
Case designed for fixing with a Velcro strip or glue.
Link to Thingiverse