[$] Fun with LEDs and CircuitPython

Nina Zakharenko has been programming for a long time; when she was young
she thought that 'the idea that I could trick computers into doing what I
tell them was pretty awesome'. But as she joined the workforce, her
opportunities for 'creative coding' faded away; she regained some of that
working with open source, but tinkering with hardware is what let her
creativity 'truly explode'. It has taken her years to get back what she
learned long ago, she said, and her keynote at PyCon 2019 was meant to show
attendees the kinds of things can be built with Python—starting with
something that attendees would find in their swag bag.