I saw this done at a TAEA conference a few years back.  It is a great way to explore sculpture and recycled art.  As we begin we discuss artists Louise Nevelson and Mark Dion, as well as discussing possibilities for everyday items we use that aren’t easily recycled.  This is a great lesson for upper elementary, middle school, and high school.  For my 5th grade students I give them an inch-wide 14-16 inch long piece of poster board to uses as a folding strip.  With older students, I would recommend using a half-inch wide strip.  This helps them create uniform pieces to combine.  They begin by placing their folding strips lengthwise along the paper (landscape style).  I have the students folding, wrapping the paper around two times before the add a bead of glue.  Then they continue to repeat folding and adding a bead of glue until it is complete.  To build the base, students continue to create their folded strips and then when they have three or four of them, the begin creating the base of the bowl.  I have students create the base 10-20 strips thick in order to give the bowl a substantial base.  Then, the students continue the process, but instead of going directly around, they spiral the strips up to create the sides and edges of the bowl.  The resulting bowl is rather beautiful.  As an enrichment to the lesson, I have the advanced students create a color scheme for their bowl, or make the bowl transform into a vase.