In the 70's I had a brilliant toy consisting of a stack or colourful patterned cardboard discs and a little hinged, right-angled mirror - you popped the disc on a sort of plate under the mirror and could then rotate it and watch the reflections change between the mirrors - don't think I've eexplained this very excitingly, but trust me it was great! I haven't seen anything like it again and can't find anything on ebay - do you remember it? Can you help me find another?