Halloween/Office Party Cake

My fiancee's mom was having a potluck at work and wanted to take one of my cakes. It was originally for Halloween but she learned that her department head was also having a birthday so the cake became multi-purpose. Nancy gave me all of the key points about her boss, such as the jar of M&M's, the red umbrella, the papers covering everything and the things she would say to them every day. Here's how I put it all together.