Help! What do I get my friend for her wedding? [Vote]

One of my best friends from high school gets married tomorrow! She is the first classmate of mine to get married (or first ceremony I have been invited to) and I am totally lost on what to get her as a wedding gift! I considered doing something fun and silly, but I have also been told I should be serious, it is a wedding after all. I need your help Mix Insiders! What do I get my friend for her wedding?!