My newest Adafruit Learning Center guide is live. This is a silly one. But it makes me really happy.
https://learn.adafruit.com/alohamora-bottle/introduction
This is so pretty! Do you mind sharing where you found those lock charms? I’ve been looking on Etsy and Amazon but no luck finding anything similar.
I’m pretty sure I got them at JoAnn fabrics in the scrapbooking section. Search scrapbooking charms on Amazon and you might find something similar. 
Thanks! I’ll check out JoAnn’s.