Need some inspiration? Then take a look at some of the following...

Snow (JPEG 122KB)
Anton Vamplew, astronomer

Bullseye in the sky (JPEG 142KB)
"In front of the camera lens is a plastic 'sandwich' in which the 'bread' is two sheets of polaroid and the 'filling' is a sheet of overhead-projector transparency film. The bullseye decorates whatever is in the picture (here a Bristol University garden), and arises from the interference of polarized light."
Michael Berry, Physics Department, Bristol University

From Ebnefluh summit (JPEG KB)
"A rarely-seen view of the Jungfrau, Eiger and Monch (left to right) from the Ebnefluh summit (13,000ft). In one sense, technology has tamed this landscape which seems to contain no living thing. The railway comes up to the Jungfraujoch in the centre of the picture and there is a hut, complete with excellent beer, at the foot of the right-hand ridge of the Monch, just above the col. The challenge of reaching this point is eased by clever fabrics and various metal devices like ice-screws and crampons. Yet a sudden storm would test human as much as technological capability."
Roland Jackson, Chief Executive, the BA

Rusted barbed wire (JPEG KB)
Iron, when left outside turns from its metallic silver colour to a flaky, red-brown colour. The iron is interacting with the moisture and oxygen in the air and turning to iron oxide, or rust as it is commonly known. In this image, a section of barbed wire, part of a fence used to confine livestock in a field, has undergone this change.
Image: iStockPhoto.com