Apple Hardware
Here we take a look and see what will work (and not) using Leopard on a Mac!
Apple Magic Mouse

The Magic Mouse is Apple's bluetooth mouse that ships standard with the new iMacs. But will it work with a Leopard Mac and be able to use the scrolling, 2 button click, among other things? These mice you can still buy in stores as of 8/17/2013.
[Confirmed] on 8/17/2013
We tested and confirmed that the mouse will work without an issue.
However swiping back in a web page will work but needs more effort.
These need Software Update KB/DL951 in order to work with full functionality.
[Confirmed] on 8/17/2013
We tested and confirmed that the mouse will work without an issue.
However swiping back in a web page will work but needs more effort.
These need Software Update KB/DL951 in order to work with full functionality.
Apple Wireless Keyboard

This keyboard is wireless and uses bluetooth for connection to your computer. These are sleek, aluminum keyboards that take 2 AA batteries to run. They also have media keys along the Fx series of keys for control such as screen brightness, dashboard, mission control, Volume, and Media control.
[Confirmed] with a 2009 model keyboard. However newer models have not been tested as of 8/17/2013
These need Software Update KB/DL957 in order to work with full functionality.
[Confirmed] with a 2009 model keyboard. However newer models have not been tested as of 8/17/2013
These need Software Update KB/DL957 in order to work with full functionality.
Apple Wired Keyboard

This is essentially a Apple Wireless Keyboard that uses a wire and has a keypad on the side. They look identical however the wired edition has more keys.
[Confirmed] with a 2009 model keyboard. Tested on 1/22/2014
[Failed] with a 2011 model keyboard. Tested on 8/17/2013
We believe that with the release of Mac OS X Lion, Apple changed the F3/4 keys to Mission Control.
[Confirmed] with a 2009 model keyboard. Tested on 1/22/2014
[Failed] with a 2011 model keyboard. Tested on 8/17/2013
We believe that with the release of Mac OS X Lion, Apple changed the F3/4 keys to Mission Control.