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ckazoo
 

Kazoo

cbcar

Racetrack

cbfrisbee


Frisbee

Cardboard

car balloon



You'll need a balloon,

and probably a straw. 

Grab some more materials

and build a Balloon Car.

How fast will it go?

What changes will make it go faster?

Boomerang
 

Choose a design and find out
which type Boomerang
will come back to you.

 

monsterjaws

Monster Jaw

castle
Click for more Toilet Tube ideas

Marble Run

Marble Run

How many different materials

can be used in your design?

What materials will make

the marble speed up

or slow down?

rubberband car
 

Begin with a rubber-band,

choose other materials

and design a Rubber-band Car.

How far will it travel?

stackable

Stackables

xylophonetube

Xylophone

cbjl

Jacob's Ladder