Go a step further
If you're already doing lots of these things already, why not try these ideas?
Put an Environmental Management System (EMS) in place
An EMS can provide a structured way to improve all aspects of your business's environmental performance, including saving energy.
Set up a recycling scheme
Paper, coffee cups, plastic cups and cans can all be recycled. If you have a canteen or kitchen put recycling bins there to make it easy for people.
Make your colleagues aware
If you have recycling schemes within your workplace make sure everybody is aware of the policies in place and where any recycling facilities are.