This is a brain exercise noted by Edward de Bono, and implemented by Kevan Davis - there's a full explanation at De Bono's web site.

The aim is to think of a category that four of these words fit into, and the other four do not. Drag them around the screen, into two groups - it should be possible to come up with something.

To play competitively or comparatively through a messenger system, with everyone using the same words; agree on a seed number with your opponents and have everyone enter it in the box below, before pressing return.
To get another eight random words, just reload this page.
beer tankard
Blake's 7 teleport bracelet
punch bowl