Lenovo offers Lenovo ThinkPad Wireless Mouse for $12.99 (reg $19.99) with free shipping.

Product Description:
The ThinkPad Essential Wireless Mouse is an excellent choice as a travel-sized wireless mouse. This sleek and stylish travel-size design offers exceptional quality in a modern wireless solution. The compact ambidextrous mouse provides excellent portability and perfect ergonomics.

• Precise 1200 dpi optical sensor.
• Connect compatible Lenovo devices with just 1 nano receiver.
• 3 Buttons (1) Left click, (2) Right click, (3) Click wheel
• Ambidextrous design for both left and right hand comfort
• 1 AA battery for 12 months battery life