Meeting Cost Timer - An answer to long meetings, maybe? Probably not.
Have you ever wondered how much a certain meeting costs. Maybe you've got stand ups that run long every morning, or a fortnightly team meeting that is just a waste of everyone's time? I have and I've joked with people about writing an app that times in Dollars rather than in minutes. I finally wrote and published it, you can find it here: https://mysweet-meeting-timer.herokuapp.com/ (It's running in a free Heroku instance so you'll have to forgive the load time.)
I can't promise you that this will help your meetings be shorter. I also can't suggest that if you use it you wont come across as pretentious and unlike-able. But you can have fun joking about it with your friends or even use its existence to start a conversation.