For some reason my bluetooth mouse stopped working today. Bluetooth is one of those technologies that either just works, or just doesn’t, and once it doesn’t its really hard to troubleshoot.
Then I remembered that I had read about an app that lets you use your iPhone or iPad as a mouse / touchpad. After a little research I found the Logitech Touch Mouse app. Works pretty well. There’s a little bit of lag at times but in a pinch, it does the trick.