I traced over a pencil drawing with Illustrator and then laser cut this little guy with some friends at IDEO. I then used the stencil to spray paint the design onto a t-shirt.

Lab Rat Shirt

Lab Rat Stencil

Lab Rat Stencil

Lab Rat Spray Painted Shirt

First I made a sketch in pencil and scanned it in.
Lab Rat Beaker Sketch

Then I traced it in Adobe Illustrator to make the stencil for the laser cutter.
Labrat Beaker Trace in Ilustrator