I want to try and do a better version of the shadow picture I took last weekend. But having just a few low wattage halogen lights a quick test this morning
showed them incapable of throwing more than a whisper of a shadow onto a wall as the sun was unexpectedly bright today, shining into the spare room, even with all the blinds down. Usually I'm aware of having only a few hours of winter-time daylight in that room to let me take pictures, so it's oddly the reverse today, waiting for the sun to dip and fade sufficiently to permit a sort of balance between natural and artificial.