Macro
flash ring light - Build your own macro flash ring light setup for
about $10 using an oatmeal can, dishsoap bottle, and metalized duct tape.
Red
dot sight for bird photography - Optical sighting system for big telephoto
lens bird photography. The goal is to improve the tracking of BIFs (Birds In
Flight).
Wildlife
blind - Build your own photo blind using PVC pipes and camo
material to get close-ups for wildlife
photography.