Catch Up
Fingertip Drag
Fist Drill
Kick on Back (with arms at side or ahead)
Kick and switch
Kick with snorkel and kickboard (you can use a traditional kickboard)
Snorkel, pull buoy, ankle strap
Scull
Side Kicking
Side Kicking w/ Kickboard
Single Arm Freestyle (with or without snorkel)
Single Arm Freestyle w/ Kickboard
Standing Kick
Superman Drill