My 5yo has been "helping" in the darkroom for about two years now. Only allowed in when I'm in there. If I'm in there, she has to knock and ask before entering (and otherwise ruining what I'm working on), and must not touch any chemicals or trays except for the wash tray. Seeing images come out on paper isn't so magical to kids these days who expect instant miracles of digital imaging. While not fussy, she actually prefers to help when I'm doing film as the lights are on and there's no prints taking up space in the wash. It's a fun place to play with water. She is completely enthralled with the bright colors of the prewash. In goes clear water, out comes purple, blue, or green water! She'll play in a 16x20 tray with water for a long time. And seeing the gralab clock go backwards is pretty special. Here's a 45ish second clip of her "ABC Winter Wipeout" course setup in the 16x20 wash tray. It's the night time part of the show, since the water is dark (with TMY2 prewash). You'll notice quite a few film developing items not being used for their intended purposes. http://www.youtube.com/watch?v=KUkhhHR6Xfk Parents; what do your kids like in the darkroom?