This type of fold became popular around the end of the 20th century. It is particularly suited to maps because it is small enough to carry in a pocket and yet it opens up in the simple move of opening the card. Copyright Compass Maps Ltd (UK).

This is an excellent scientific novelty which causes amazement when people see it for the first time, irrespective of whether they are scientifically minded. (The version in the Davenport Collection was made for an American company, hence disk rather than disc.) The base is a slightly concave mirror on which you spin a heavy disk, much like you would spin a coin on its edge. However, unlike a coin, the heavy disk spins for a very long time and, as it slows, the sound it makes changes. There is a real surprise when it stops. There are a number of magnetic pieces with holographic surfaces which can be placed on the flat surface of the disk and which create intriguing light and colour patterns as the disk rotates. According to the box it was invented by Joseph Bendik in the 1980s. Made in Taiwan.

After winding the yellow key on the left, when a coin is placed in the bowl on the right and the button is pressed, the snake charmer bends forward and the snake rises out of the basket. At the same time the coin drops into the bank. Two batteries in the base should also activate some music, but unfortunately this is not working on this example. Made in plastic by Everlast Toys, Hong Kong. Copyright 1998 Everlast.

This book has itself an interesting design feature. The book was the catalogue for a touring exhibition from The Collins Gallery, University of Strathclyde, Glasgow. The tour started in Glasgow on 10 October 1998 and finished in Cheltenham in November 2000. The catalogue includes a brief but good introduction to moveable and pop-up books over the centuries.

This is an amazing illusion in which, as you walk around a room looking at the dragon, it turns its head so that it appears to be following you. The design was downloaded from the web and constructed by John Davenport circa 2008. The design was originally produced for Gathering for Gardner 3 in Atlanta, Georgia, USA 16-18 January 1998. Copyright 1998 Binary Arts Corporation. It was inspired by the work of Jerry Andrus.