For many years I used the little flat plastic red fish which would curl up in different ways on the palm. Then I had some small ball puzzles--these were enclosed in a plastic cover and the aim was to get the mini balls into various holes. Then I found those small magic Slates wherein you write on them with a small plastic stick, attached,and when you lift the transparent paper you wrote on-the writing disappears. Then for a while I had a display tray of cheap, bright rings..these were originally for the effect by Poz about a witch who steals the child's chosen ring, a fairy (you in a funny wig) appears the ring vanishes and reappears in a nest of barrels, wood dolls, boxes or what you
will, Finally what was very popular at one period was a coloured pencil, or a small put together yourself card aeroplane which flew--via an elastic band.
Allen Tipton UK