Snowy, the web app companion to the Tomboy notes application, has plenty of outstanding tasks in bugzilla.  Some have been listed here specifically, but really fixing any bug would make a great task.

This is a catch-all task.  Fix any Snowy bug in GNOME bugzilla.  We'll recreate this task every time it's completed.

You can find a complete list of Snowy bugs here: https://bugzilla.gnome.org/buglist.cgi?product=snowy&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED

You can browse by a few different criteria here: https://bugzilla.gnome.org/browse.cgi?product=snowy