Ranjit Bhatnagar is making an instrument every day in February. Some are electronic, some are mechanical, and some are both. This walnut shell rattle seems easy to make with a drill and some string, and makes a pretty satisfying jangle, suitable for weekend sock-clad marching band parades around the house.

Becky Stern

Becky Stern

Becky Stern (sternlab.org is a DIY guru and director of wearable electronics at Adafruit. She publishes a new project video every week and hosts a live show on YouTube. Formerly Becky was Senior Video Producer for MAKE. Becky lives in Brooklyn, NY and belongs to art groups Free Art & Technology (“release early, often, and with rap music”) and Madagascar Institute (“fear is never boring”).