Lenovo offers its Lenovo N800 SmartTouch Wireless Mouse in Black, model no. 888014849, for $39.99. Coupon code "USP1JN454849" cuts it to $17.99. With free shipping, that's $22 off list and the lowest total price we could find, although it was $3 less in December. It features an integrated touch panel for scrolling and zooming.