The photos taken with your smartphone not enough for you? Photojojo has found a way to improve things by offering two removable goals. The first one who gives a fisheye effect (or fisheye, a very wide angle but returned with a circular deformation of the image). The second is an objective that combines macro and wide angle. Both are lightweight and easily attach to the phone via magnets. The manufacturer claims they are compatible with all models of smartphones.
FishEye costs 20 € and the combo Macro / Wide Angle 15 €, the complete kit is available at a price of 30 € (excluding shipping).