Ask your manager if there are any other tasks you can get involved in, or if any other departments need a little assistance. Note, this should not interfere with your core duties as this will make you look irresponsible and unprepared, which will count against your application for a promotion. However, if you are able to make time for more work, it demonstrates a great ethic, a willingness to get involved and team skills.
Contributor: Steve Pritchard from cuuver.com