There is a rubber band along the length of the butterfly which allows you to wind up the yellow wings. You then tuck the butterfly inside a card in its wound-up state. As soon as someone opens up the card the butterfly flutters out, causing quite a surprise.

This is a precision laser cut thin piece of wood which is strong enough to send through the post. The frog shape has been cut through the card, apart from a few points which hold it in place. The frog can be cut out of the card and then bent along the part-laser-cut hinges to produce a 3D model of a frog. Made by foldableobjects.com in Germany.

When this card is opened up, it activates an audio message. Sadly, its voice can no longer be heard. Radio South broadcast to the south eastern region of England. The pitch is that the radio station attracted a greater proportion of affluent people than the local television station.

When you indent a disc and place it on a flat surface, after a while it will spring back into its original position and jump several feet into the air. Advice on how best to make it jump may be found here. The Davenport demon trademark is stamped into the disc.

When you indent a disc and place it on a flat surface, after a while it will spring back into its original position and jump several feet into the air. Advice on how best to make it jump may be found here. On the gold coloured side, these discs have a circular indent close to the circumference. This feature is not present on item N2554 which otherwise appears to be identical.

When you indent a disc and place it on a flat surface, after a while it will spring back into its original position and jump several feet into the air. The instructions on the envelope provide the all important details. Note that the novelty was supplied by a tobacconist. It was not unusual for tobacconists to stock such items.

You wind this device up and place it over the middle finger of your right hand, with the spike facing away from your palm. When you shake hands with a person, the spike is automatically depressed, allowing the motor to unwind with an unexpected buzzing sound and vibration. It causes both surprise and shock followed, hopefully, by laughter. Another name for this joke is Joy Buzzer. It was a huge success for S.S. Adams, its inventor, in the USA. More details may be found on the web.