ASUS WL-330 NUL is a damn small router
ASUS designed and created a router that can very well compete to the smallest router in the world competition. With dimensions of 0.8 x 2.6 x 0.6”, this router is no bigger than a common USB stick, and can easily fit in your pocket.
It can be powered from the USB slot of a laptop or can be powered from the electric socket using an adapter. Go!