[cknight]

Take note of things in your day-to-day which annoy you.

I became a product owner for a team running 3-week sprints, and kept finding myself being caught out in stakeholder meetings - being asked for prospective delivery dates relative to our sprint cycles. I have others on my team to organise ceremony dates and handle the Jira stuff etc, I just needed something to glance at on my phone within a few seconds.

I'm not a developer by trade so it's nothing fancy, but I made https://sprintcalendar.com and I use it most days at work now. I can't see how I'd monetize it, but it was fun to put together and solved a problem I had.