I remember this skit that involved 3 or 4 muppets each one of them tried to sell something on their own. One tried to sell lemons alone, the other tried to sell water alone, and the other tried to sell sugar alone. None of them sold anything alone until they all decided to cooperate and put all their items together and sell lemonade. One note in particular...as a kid, it always bothered me when the muppets huddled around the table to set up their lemonade stand and didn't let the audience at home see what they were doing. Of course as I got older I understood why.