Made my first official walk into the beans yesterday, ending up finding a couple items before I found my plane. One was the canopy for Jeff's big glider, and the other was a blue and yellow hatch of some kind. I have attached a photo. The reverse of the part is white foam and has a couple magnets embedded in it. I have placed the hatch in the lost and found area (the shelf under the table with all the old batteries etc.) with a handful of gravel in it to keep it from blowing away. If it is your yours, please return the gravel to parking lot when you retrieve it.
Mike K.