VX Nano
Used by 2 peopleamazon.com ↗
“For pointing, a Logitech VX Nano travels back and forth with me.”
Tom Armitage Interview, Game designer, technologist (Hide and Seek) · via Uses This 
“I also swear by the Logitech VX Nano cordless laser mouse, which was recently discontinued so I bought four of them to last me a few years.”
Andrew Huang Interview, Hardware misfit · via Uses This