Since I can't stand people taking off their shoes near me I went a different route. I have a whole bunch of random stuff that is all very similar that I could use for this assignment. And I will have the students organize this in whatever means they see fit as a class, then describe their organization.
The items:
Football thingy
Aerobie
Wobble thingy (the yellow and green thing) that is 2 ovals attached to each other
Boomerang
Roomerang (a boomerang made of foam so it can be thrown indoors)
Circle thowing thingy (I wish I knew the name of some of this stuff)
Racquetball
Squash Ball
Tennis Ball
Ping Pong Ball
Golf Ball
My dog's ball
Foam globe
Giant Foam Die
Regular die
20 sided die
So any comments or suggestions?