Step 1: Macro Lens (No Step-up Ring)
To make a cheap macro lens you first need to find a magnifying eye piece. These can be found some times in the cheap toy sections of stores or as party favors. I found this one at an university fair booth. Also you will need a small rubber spacer to insure a tight fit of the lens and the camera face. I used a 3.5cm rubber car tire from a toy car, cut in half horizontally. You will also need a hands length, quarter width strip of of duct tape (more duct tape will be required later).
First attach the tire to the lens. I cut the tire open so that it would fit around the eye piece of the lens. Rip the strip of duct tape just enough to join the tire and lens. The rubber spacer the tire acts as will make the lens, which has a level bottom, fit better on the curved face of the Flip HD camera.