This could be a staff project or something done in conjunciton wi the community, such as local school. Take a little barren / grassy area and turn into a garden, suited to the specific needs e.g. playground style for kids / quiet retreat for staff...
This is about people coming together on a project to find, design and build an area that could be the the office or even better, for the local community.
Instead of the smoking shed, staff can go to the the garden bench for a chat.
If involved wit the local community, it could be a mini allotment area. The idea is a project that delivers a tangible result that those involved with find a real sense of achievement and pride.