I absolutely love photo booths. They are a great way to get some really special and often hilarious photos of your guests and it is a great addition to the entertainment for your friends. I find the best way to make your guests really let their hair down is to give them something to play with!
I also add additional props, anything that you can find really… feather boas, comedy hats, fake cigars, sporting equipment. You name it. Make your own fancy dress box and let the fun begin!