A few twitter wall applications exist, but require hosting, significant setup, and are app specific. A wall/stream app that could draw data from google sheets could draw on form submissions, data fed to sheets via ifttt, or various other sources to provide a 'live' visual text stream
An visualisation could draw data from various sources with minimal end-user setup (e.g., specifying a column in a google sheet, which draws data from a source), ideally various visualisations including the text stream could be implemented. These are useful for events (based on a hashtag) and classroom contexts (based on e.g., quiz submissions). Some existing apps exist, but tend to be tied to particular platforms. Existing apps often include filter-terms (so those submitting quizzes/using the hashtag can’t get certain terms displayed on a big projecter wall…). See, e.g., https://github.com/EightMedia/TwitterFontana and https://github.com/remy/twitterwall
The project probably isn’t big enough or complex enough for course work, but might be an interesting side project for someone.