If you are looking for an alternative to the mouse, then you should consider a trackball. Basically a trackball is an upside down mouse in which the user rotates the ball rather than the body of the mouse. Trackballs are useful when there is a minimum of space available for use. The fingers are used to move the cursor around as opposed to the wrist. This may be useful in alleviating wrist problems. We have 2 ranges of trackballs, the Kensington and Logitech ranges. Both provide good quality units with varying features, which should cover most people's needs with trackballs. Both companies also make their trackballs for both Mac and IBM compatible machines.

Kensington:

The Expert Mouse / The Turbo Mouse.

The symmetrical design of the Expert / Turbo Mouse fits the shape of any hand, left or right, big or small. The extra-large buttons are specially designed with ridges to guide your fingers without looking. The larger ball makes it easier to move and control the cursor. Kensington offer excellent input software drivers.."MouseWorks" makes computing easier by placing more of your computers timesaving capabilities at your immediate command.

Orbit Optical

The Orbit is a comfortable trackball, with a very accurate optical tracking mechanism.  Worth a look for a trackball that stays in one place and is resistant to dust.

Logitech Trackball

Marble Mouse

The Marble Mouse is a trackball that provides comfort and fit similar to a mouse and the space saving convenience of a trackball.
The Marble Mouse shape fits your hand like your favourite mouse and provides the comfort and easy control of the buttons and ball for both right and left hands. There has also been a welcome drop in price for the Marble Mouse.

Cirque Touchpads

We now have stock of the Cirque SmartCat, which is an excellent touchpad and worth considering as an alternative to a mouse.
Cirque's Smart Cat sets the standard of comfort plus performance in computer control. With intelligent software, one-touch scroll and zoom, and distinctive sounds for each operation, Smart Cat combines all the power of a top-of-the-line mouse with the unrivaled comfort and durability of a touchpad. Programmable software allows you to go from fast on-screen movements to pixel-point control.
Scroll, Zoom: Quickly activate vertical/horizontal scrolling as well as magnification tools by gliding a finger along the touchpad edges.
Mouse-like features: Right-clicks are accessible by tapping a finger in the touchpad's upper right corner.
A GlideExtendT feature makes it easy to keep moving the cursor after you've run into the touchpad's edge. Virtual buttons, sounds, speed, sensitivity and orientation settings can be customized via Cirque's driver.