Like Alima, there was always someone on the 'married patch' having a Tupperware party. I seemed to have cupboards full of the stuff, including the fluted mousse ring, lolly moulds, bowls with 'burp' lids, cereal containers, but the thing I used for longest was a kind of round tray with three sections and a little handle that you screwed into the centre when you weren't using the lid. I used it for years and years, especially when we were having curry, to put various "sides" in - and then, just before we moved five years ago, it disappeared! I really miss it.