People often put a pencil behind their ear for safe keeping, but when wearing the appropriate safety equipment this is not always possible. This replacement temple for safety glasses holds the pencil securely conveniently.
I have included the STL file for 3D printing yourself. You can also find the file on Shapeways by following this link (ShapeWays)
This replacement temple fits 3M glasses that can be found at the following link and also at home depot. (3M Glasses)
I started by measuring the temple of an existing pair of safety glasses with digital calipers and building it again in SolidWorks. Next I added the pencil clip part to the 3D part.