Kensington K72330US SlimBlade Bluetooth Presenter Mouse (Ice Blue) for $16.99 plus $2.95 shipping, making the total $19.94 shipped. Here is a screenshot for your reference. It is a full-featured mouse that can switch to presentation mode with an ultra-thin design to fit a pocket or bag. This mouse also automatically goes into sleep mode when the notebook does. Most places have it for about $44.