This stylus is called MicroStylus, and according to its designer, this is the smallest stylus in the world. MicroStylus is made from billet aluminum and it comes with soft capacitive rubber tip.
Interesting thing about this stylus is that you don’t have to carry it around in your pocket or in your bag; instead you can just plug it into 3.5mm audio jack and carry it with you at all times, and use it quickly when you need it. Although MicroStylus is rather compact device, we don’t know how easily can you use it due to its small size.
MicroStylus is compatible with all touchscreen devices, and you can easily carry it with you at all times, as long as you have free audio jack. As for the price, MicroStylus is priced at $9.99, but you can get two for $15.99.