Midnight

Above is a laser cut acrylic gear clock from ChainClocks.com.

Magnetic Gears

Above is a laser cut birch plywood magnetic gear toy from Steven Mattern Design.

Gears

Above are printed and laser cut wood gears from The Porkchop Show.

Patek Philippe

Laser cut paper watch from The Gate Design Group.

Non Linear Gears

I still have no clue how they work...

From tweakie.cnc

Gear

Laser cut from 1/8" ABS plastic by Pittsburgh's Industrial History on Flickr.com.

These Don't Make Sense

Square gears? Really?

Laser cut from acrylic by Adzle on Flickr.com.