I quote: "I gots so many of these at the hospital, want one?"
Now, I'm not 100% positive this was a bedpan...however, it was plastic, rectangular, and about the size of small shoebox. And she got it at the hospital. She currently uses these things to hand-wash her delicates, so it's possible they were...um...food trays of some sort? Used for foot baths? ... I'm pretty much drawing a blank on what this object could have been used for at the hospital. Med school friends, feel free to chime in.
ETA: Okay, I got curious and wikied bedpans, and the plastic thing she offered me did not look like any of these. However, check it out, the future is here: ergonomic bedpans!