Arduino neighbourhood:

http://leaflabs.com/devices/#Maple
http://www.heise.de/newsticker/meldung/ARM-Board-fuer-Arduino-Shields-1618108.html

pythonic board

python on nokia handy to steer arduino
http://www.developer.nokia.com/Community/Wiki/Communicating_with_Arduino

python on a chip, only a bit of python power
https://www.xcore.com/projects/python-chip
http://code.google.com/p/python-on-a-chip/

mini pc:
http://www.solid-run.com/products/cubox
http://www.olimex.com/dev/index.html
iMX233-OLinuXino is Industrial grade Single Board Linux computer in very compact form.
http://apc.io