Customize a web application built using a development environment called "AppGini" ([url removed, login to view]). This tool allows code access for each table using hooks files to add extra PHP/SQL/java script code to add extra features. The purpose of this project is is to write some codes to allow extra features such as "event" automatic notifications, user views, reporting, ...etc.
P.S: Make sure to download the development environment and see how it works before you make your proposal. Also there is a possibility to extend the work beyond this simple project.