Hi Anita! It would be a novel idea to get a photobooth for your niece's birthday. Usually, photobooths are part of the wedding functions. So, it would be a unique and really surprising element of the birthday party. Not only your niece, but even her friends will simply love it. You can make quirky placards and props, depending on whatever your niece likes best. The birthday album will turn out to be truly amazing. So, go ahead with this lovely idea. Even, I am planning a similar party for my little cousin.