You really don't need expensive or professional gear. At all. The stuff you’ll need for this class, is probably in your home right now:  a window, dark curtains, aluminum foil, white paper, twigs, some lace or other translucent material, black paper, tape, a bowl, a torch and water. (And Christmas lights or the free hack I'll tell you about.)

After and during this class there will still be room for happy accidents, but there's no longer a need to hope for them.