Thing Fling has a Wireless Presenter and Laser Pointer for free. You just pay the $6 shipping charge. This price is good until Midnight EST tonight or until the item goes out of stock.
Features:
* USB plug and play wireless device - USB Port
* Lets you go forward or reverse through your presentation.
* Combines the function of a laser pointer and wireless mouse
* Easy to set-up, easy to use
* Controls your presentation up to 8 meters!!!
* Battery included
* IBM PC Compatible Pentium II or higher
* Windows 98 SE or higher
Link
Wireless Presenter and Laser Pointer $Free + SH 
