Klutz Book of Paper Airplanes Slime Assemble your own marble runs

Assemble your own marble runs with this excitingly challenging construction set

all the other balls are sent rolling down one level in unison Drop the ball into the funnel at the top

Designed with vivid spectral colors

7 yards (6

Klutz Book of Paper Airplanes Slime Assemble your own marble runsLet your imagination take flight with this Klutz Book of Paper Airplanes. This step by step guide shows you exactly how to build amazing paper airplanes and comes with 40 sheets of flight tested, ready to fold paper so you can rule the skies. Klutz Book of Paper Airplanes Features: Printed on both sides 20 colorful patterns including leopard print, wood grain, hot rod flames and lose it on the lawn grass. Ages 6 and up.