Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3382882.
This is a case for the EggFinder basic (non-LCD) receiver. It has a space (and openings) for a 9v Lipo rechargeable battery similar to the Okcell, or could be used with a standard 9v battery. There is a "cover" plate for the bluetooth unit that holds it in place and a rectangle cutout on the right of the unit for a power rocket switch. The rocker switch was a pull from something so I don't have a part number for that. You'll need 10 - 3mm screws about 8-10mm in length to assemble everything. You'll want to print the top and cover with some support as the holes for screws are cbored. You'll also need to flip the base over to minimize support. Whether you need the supports for it (for the side cutouts) is up to you and your confidence in your bridging. There are two bulkheads in the antenna section of the base which have holes in the middle to support the brass whip antenna that comes with the Rx kit.
If you like the graphics and have a Cricut (or know someone with one), the cover is available at Cricut (https://design.cricut.com/landing/project-detail/5c4c88ae638f9c0665944348?fbclid=IwAR3p8tJeyQCNuWi20iMVunjYhVCGPnFhpEU2W8e1B-Rhnx59WQlCtZKGLtM)