Finding the right birthday gift for your best friend is extremely important because if you can't buy her a great gift, then no one can. If it's a landmark birthday then you've got your work cut out for you; ordinary gifts won't work. For the big birthdays like 21st or 30th birthdays, most people throw surprise parties for their best friends and think that it'll work as a gift but a real gift is still in order at the end of the day.
If you're a guy then the only surprise party that you can single handedly throw is paying for dinner at a restaurant; which isn't exactly special.
Birthday gifts that you can't get your best friend include gift certificates; movie tickets and CDs. If you're buying for a girl then there's the obvious choice of buying apparel but you can't get her a gift certificate or any other kind of gift voucher, you'll have to buy something (and include the receipt).
Food is always a birthday gift for girl best friend great gift in most cases; but the food has to be something extra special and unique. Birthday food treats like birthday gift baskets or fresh fruit bouquets that most people go crazy over. Just looking at them makes you hungry and they're considered a top notch indulgence so it's a great gift for just about anyone.