If a small board sounds like the most appropriate choice, there are two options: a Nano and a Micro. They look like the same board to the untrained eye, but they're different from one another.

Research involves micro- and nano-electromechanical systems (MEMS and NEMS) for transducers, sensors and actuators with a new interdisciplinary initiative in engineering for quantum technology ...

This special issue gives state-of-the-art Micro and Nano Technologies in the UK. The topic includes Micro and nano devices; Materials, fabrication, and packaging for micro and nano devices ...