2.  Make a new sport!
 Need rules
 Need a scoreboard/scorekeeper
 Referee(s)

3.  Referee Jerseys
 Player Jerseys
 Paper/Pen (Scoreboard/Rules)
 Whistle
 Various Balls
 Theme Shoes
 Field/Gym

4.  Additional Materials
 Nets
 Racquets
 Cones
 Tables
 Goggles/Helmets/Etc.