Here is another smartphone accessory that lets you use your mobile device as a 1000x microscope anywhere. The TIPSCOPE is battery-free and tiny. Simply stick it on your phone, and you are ready to go. The device is compatible with top iOS and Android phones.
The TIPSCOPE has a resolution of 2 microns and weighs only 5 grams. It also has a light guide. You can find this project on Kickstarter.