What do you use your Bangle.js for?

Programming/testing other Bluetooth devices using things like the 'Espruino Programmer'

This: https://banglejs.com/apps/?id=espruinopr­og

Apart from stuff for work, an example might be I was doing a 'Batak' game for a kids party, and I had 10 Puck.js Lite to program with the same code - so I use that app, paste in the code, and then every time I boot up a Puck.js the app sees it, programs it, and lights an LED on it to show me it's been programmed. It saves a lot of work if you've got a bunch of devices to program.

We also have an app we use when getting Bangles ready for shipping which connects to them when they appear on Bluetooth, checks the firmware is in correctly and runs some code which tests all the internals. It just runs on a totally standard Bangle.