wooden ball handles + drill bits + LED kits + batteries gives you a glowing ball handle. if you throw it, it will trail colors, and prolly spin really pretty.
expensiver route involves contact juggling balls + drill bits +... to make clear ones. have you ever seen
beamers in action? i guess you'd want them a bit smaller, tho. jump rope handles have a built in attachement and swivel... it's like a triangle with a ring, bent 90 degrees. drive a nail (twisted deck nail, i guess) through the ring into the ball. no flat side needed. hit
this page up for pics of jumprope porn. that's right, hot double dutch action, baby.

CY-119 is where it's at.
-- dut