The Cub is ready to fly today, but I'm still having coughing fits from the fourth day of a cold. That makes for an unsafe flight, so I'm sadly staying indoors. If I can't fly, I can still do design work for flying.
Each accessory slides a piece between the outer and inner skin of the fuselage. On the far left is an intercom holder. The intercom allows you to plug in two headsets so the pilot and passenger can talk to each other. This accessory gives you access to the volume and squelch controls. I might change the orientation to put the back of the intercom against the fuselage. The center piece is for cable management. There are two cables per headset, one for the push-to-talk button, and two more for connecting the intercom to the radio. The cable manager holds cables in place and out of the way. Multiple can be used to help in different places. The accessory on the right is for the radio. It lets you clamp the radio to it and keeps it at a convenient viewing angle.
My only concern is that these could potential break, leaving a piece of plastic inside e fuselage. I think I can address that with the right thickness though, possibly making rounded edges, too.