So I recently changed over to ExpressLRS, using HappyModel's ES900RX which is absolutely tiny. Needed an effective way to secure the unit as well as the antenna itself, so I designed this part which works pretty-much the way most of them do.
Crucially, the part which holds the receiver itself is sized so that the UFL connector can be pressed in, then slid into the holder, such that the TPU presses down on the UFL connection. This will hopefully reduce the chances of the antenna disconnecting in a crash - assuming the antenna itself doesn't get ripped out completely in an extremely violent crash, in which case your antenna connection will likely be the least of your worries.
The author marked this model as their own original creation. Imported from Thingiverse.