It's normal to expect a more grown-up and mature birthday party when you're turning 25. Most people think that by their 25th birthday, they have accomplished something in their lives. With school over and done with, a new job, and perhaps for some, starting a new family. Perhaps for the birthday boy/girl, it's a silver anniversary because they were born on the 25th of that month and they will celebrate their 25th years. Celebrating a silver anniversary is one of the most creative birthday ideas. But not all are so lucky, and for those who can't celebrate their silver anniversary, here are some unique ideas, that will make your party memorable.