If you’re looking for a good card to run the Arduino version of uLisp you might want to consider the Seeeduino Mega. It essentially an Arduino Mega 2560 at a lower price, and with the more compact form-factor of an Arduino Uno:
You can program it from the Arduino IDE using the standard Arduino/Genuino Mega or Mega 2560 board option.
It’s available in the UK from Unmanned Tech:
Seeeduino Mega on Unmanned Tech
or direct from Seeed Studio: