This website. How meta!
Could put it on Lambda & S3, but that would take longer to set up. Maybe eventually I'll extend this monorepo with a cdk app that deploys all this stuff without EC2
I built a pair of "on air" lights so that my partner and I can signal to each other when not to be interrupted. This solves the problem of one of us (mostly me) barging in on the other while they are in the middle of a work call, zoom meeting etc.
This project ended up being a pretty good learning experience for me around circuits and specifically driving high-power LEDs.