Photography enthusiast Kris Robinson used to handhold a flash above his subjects for macro photographs, but then he got tired of doing that and ran out of hands. He then came up with the brilliant idea of making a do-it-yourself contraption that attaches to his flash when it’s mounted to the hotshoe. The light travels down a tube lined with reflective aluminum tape, and is bounced downward onto the subject through a diffused lightbox. For a couple sample shots, see here and here.
P.S. Robinson also offers a tip for shooting macro photos of insects: if you place them into your freezer for a minute or two, they’ll sit nice and still for a while before warming up and scurrying away.
Image credit: IMG_0495 by Kris Robinson and used with permission