Sometimes you just need a little reminder of what you programmed all the switches to do. This helps for a quick glance, especially as a pre-flight reminder. Print a few for your different configurations, or print one and swap out the paper. The size of the placard is 70x110. Print your configuration on paper and cut to fit. Then affix with glue or tape. I went quick and easy with packing tape providing lamination and wrapping around the ends to hold it. You could be fancy and laminate the paper and then add velcro on both to easily swap them out.

It fits with the standard antenna and with an ELRS module and antenna. It connects via friction fit on the antenna connector.

I printed in ASA with 3 walls and 15% infill, but it really can be printed with just about any settings and filament. 

I got this idea from Useful Aircraft on YouTube. He also uploaded his version from his videos here https://www.thingiverse.com/thing:6690735