Re your wanting ideas for an Android project.
I and others, from reading through queries via Google, have a problem that the sync between Google calendar and our smart phones sometimes "chokes up".
To fix this one has, on the phone, to stop the "Calendar Storage" app, then clear the data of the same app and then reboot the phone, I find that I am doing this at least once a week.
I have found an app called "Fast Reboot" that just reboots a number of apps including the "Calendar Storage", but it still takes a number of repetitive keystrokes to do the tedious job of stopping and clearing the data.
Would you not like to create an app so that a one button click could do the job.
I am now in my eighties and find that my programming skills have dwindled.
Thanks in advance.