Short and sweet, Dell has the WM311 Wireless Mouse with Nano Receiver (Black) on sale for $15.99. If you're in the market for a laptop companion, this would make an excellent bag-buddy as it features an ergonomic and compact design, 1000dpi for precise movement and automatic on/off with indicator light.
The mouse as garnered over 300 reviews with an average rating of 4.7/5 which means there are a lot of happy customers with this mouse walking around. At a regular price of $30, we might be inclined to pick up a more affordable mouse but this is pretty good value at under $20.
Free shipping is available.