30 Mechanical Projects:

Balloon hovercraft

Pop rocket

Ooglies

Ball puzzle

Water rocket

Newspaper tower

Blow pipe

Sailing boat

Flying cups

Newspaper bridge

Cork gymnasts

Squeeze rocket

Marble run

CD racer

Newspaper den

Solitary bee house

Marble maze

Traction trebuchet

Glider

Wind buggy

Balloon buggy

Catapult

Bird box

Zip wire

Bazooka

Weather stone

Bottle rocket

Wind turbine

Ballista

Coloured spinner