Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:1510555.
I use FPV goggles without a built in RX so I've always just zip tied my boscam RX to a 1/2" dowel to get it up in the air. But that was clunky and tended to fall apart.
So I took a few minutes and tossed this together in OpenSCAD, then took a few more minutes to add the ability to add custom text on the front.
If there's interest I could tweak the design so the mount is customizable as well allowing different sized/shaped dowels to be used, this just happened to be what fit my needs.
It fits my RX very snugly, it doesn't come out without a bit of a fight. You may want to tweak the sizes in the rc305 module slightly if it's too tight for your RX. I've included the OpenSCAD source so that's easy to do.