Go cable-free with the Rapoo M500 Wireless Optical Mouse. Just pop it in your bag as you head to the office, or to a café for some internet browsing over a cup of tea. Choose the wireless mode that suits your computer the best as it connects via both Bluetooth and 2.4 GHz wireless options. You can also connect it to up to three devices, perfect when you need to switch between your laptop and desktop. You won't disturb others around you when working in the library, as the Rapoo M500 has a silent click so you can tap away to your heart's content. And you won't have to carry any batteries or charging cables around - the Rapoo M500 has up to a year of battery life.
Price: £24.99 from Currys PC World