I was looking into Android phone hacking and was surprised to discover https://webadb.com/. It's a web equivalent of adb (Android Debug Bridge), which can install applications on a device connected over USB, among other things.
Very cool project but knowing how much access adb gives to your phone I wouldn't trust it unless you're self-hosting.
I've deployed an internal version of the upstream project (ya-webadb [1]) before. It can be built as a static site, and the upstream version publishes to GitHub pages, so it's really easy to self-host.