Increasing Morale

Does anyone have any suggestions to help increase morale of your co-workers?  I am looking for something to help brighten the mood of my fellow co-workers.  We are really in a slump.........Any suggestions would be greatly appreciated!!

at the diabetes clinic i used to work at, we had a box called "i appreciate you". it was basically a little shoebox with a hole cut out of the top. you could leave a little note in the box with a statement of thanks or gratitude or recognition for someone or a group of people. at the end of the week, the notes would be read out loud and delivered to the people they were about. it always made people feel good to see how they were appreciated at work. sometimes just reminding people they are doing a good job is needed. :o)

Thanks for the suggestion C!  May have to try that one!