Actually useful stuff you've had Claude do that saved hours of time/money?

Specifically, something Claude did that actively saved you spending hours doing something productive yourself, or that you'd otherwise need to pay for. Can be anything, just interested to hear things people applied it to, my recent one: Bought a bunch of NVIDIA Jetson Xavier NX modules + JNX-30 LC boards on a liquidation auction a while back. Still has custom headless jetpack image, not ideal for resale, check Auvidea site for fresh install instructions. Has a bunch of custom configuration scripts for flashing a jetpack image to the carrier boards written around 2022 Spend a few hours getting it all going myself, failed for no apparent reason at the last step for building the image with no log entry pointing to a clear cause. Tons of huge log files to parse, kept procrastinating figuring out the problem. Occurred to me last night "maybe Claude can do it". Plug the board in to my laptop in recovery mode, explain the problem, point Opus at my project directory. It reviews the logs, spots log entries related to e2fsprogs and OpenSSH, discovers changes to both of these tools since 2022 introduce silent breaking bugs to the setup scripts. Patches the setup scripts correctly. Builds and flashes the image to the boards successfully. Might be a bit of a "duh" for others but just throwing Claude at hardware setup/config/debug problems hadn't occurred to me before. This kind of shit can take hours, there was nothing obviously wrong with the commands in question in those scripts (they worked at one point), you had to know how changes to the tool itself broke the script.