I've been meaning to post these images for a long, long time (the baby in the photo is now a full-tilt toddler). This is mainly to let anyone who is curious know what a cheap ($30), 42" "multi-use diffuser/ reflector" can do for natural light photos.
While I know the basics of studio lighting and modifiers, I prefer constant and natural light, and frequently got frustrated when it wasn't diffuse enough or had hotspots. Think about direct sunlight through leaves, or through a window, or any form of very powerful directional lighting. Sometimes the warmth and calming effect of sunlight on the subject is very desirable, plus it can be found on any good day near a window when you're on location. Bringing the foldable diffuser to someone's house is much easier than strobes, stands and softboxes, even if it limits your options for shooting locations.
So here are three shots, in fairly quick succession, with my (now ex-) FA77 Limited and the magic of low-in-the-sky winter sunlight coming through a window.
Direct sun:
42" diffuser panel halfway between window and subject:
Subject playing with the silver/gold zip on reflector, with the panel in the background: