It always amazes me that we all love certain holidays and love the feeling of community and family. Maybe we could learn some lessons from these holidays and take aspects for the whole year.
Recognise that decorating the workspace with family photos is important to people.
How can you recreate the family feel at work - team photos, team names etc
Can you build targets into decorations for the department... eg a Xmas tree with each branch a progress target towards the top.
Can you think of a way of connecting more with the family. Have an open day for parents to bring their children to work?
Decorations are a visual stimulus - maybe there are lessons for how to decorate an office.