Most developers would agree that work does not allow them to get enough time in developing their social life skills. Use your end-of-year party to help remedy this!
You could make this as structured or unstructured as you would like. Have some me-time planned for yourself to create, or simply provide yourself with a lot of artsy resources and give yourself free rein to create whatever you feel like.
This would also be a good time to have your fellow developers and entrepreneurs help you get rid of old and broken boredom.