Microsoft Wireless Mobile Mouse 1000 (Blue or Red) + $2.50 in Skype Credit

Leave the nano transceiver plugged in when you’re on the go, or stow it in the mouse
Quality performance with 1,000-dots-per-inch (DPI) tracking and 2.4-gigahertz (GHz) wireless
Long battery life of 10 months lets you work for extended periods of time without having to change batteries