We own a Roadtrek 200 RV (really my wife's but she lets me sit in it sometimes) built on a 1997 Chevy Express Van. A few weeks ago it was at the dealer for a few days for an electrical repair and it was broken into on their lot. Not so much broken into as entered into, since the guy who parked it locked the front doors but not the side door. In any case, some lowlifes entered it during the night and took all kinds of things from inside. Mostly they took clothes, kitchen supplies, the personal items that always live in the van, anything that might be useful, but they also took the radio from the dash. Also, they took something else from the dash but, embarrassing as it may be, neither my wife nor I can remember what was there. Apparently not something we rely on, but we'd love to know what they took. I've attached a photo of the dash with the obvious empty hole. Just below the air vent.

Can anyone tell us what was there?

Thank you!