I was kind of bored, so I whipped up small Morse Code interpretter. It needs no additional components, just Digispark itself. It flashes Morse Code using builtin LED. Source code is well documented. As I am rather new in hardware computing, any feedback is appreciated.
There is Python script included (DigiMorse.py), expects to have Arduino "usbdevice" folder in the same folder the script resides. Please copy this folder from DigiBlink example (USB controlled RGB led). The DigiMorse.py script is actually modified DigiBlink.py. Mac and Linux users should not have problems running Python sripts (having libusb installed). I can't say much about Windows though.
Usage: ./DigiMorse.py your message here