How to make a segmented bowl.
1) Glue up long strips of scrap wood.
2) Cut them into short equal segments with 15-degree miters (a table saw jig makes this easier and safer).
3) Glue them into rings (hose clamps work well).
4) Glue the rings into stacks. At the base of the ring stack, glue a solid piece for the bottom of the bowl and a sacrificial piece of wood that you can screw to your lathe.
5) Mount to lathe and turn it smooth.
6) Sand and finish. Voila - you have a bowl.