I know our longest builds take about 35 minutes, so I sometimes crudely set an alarm to check on it. However this doesn’t let me know when a build finishes (fails) much earlier, or if it takes a few minutes longer.
A simple but effective solution would be to have buildkite build tabs make a ding, and/or do a local notification when the build finishes. Ideally it would be easy to opt-in or out, only happen for tabs that are on a specific build (not branch/org). Perhaps the build page can have a non-persistent checkbox on it?
I think the notification would be much more useful for me, as I don’t always have my audio turned on.