1) Help Them See Into the Future
Talking to a psychic is a fun experience that everyone should have at some point. For your single friend, set her up with a love tarot reading from a trusted psychic like the ones found at Psychic Readings 123. You might just help her find the love of her life. If she's not single, you can still get great love and career advice from a psychic, and you'll both have fun with the reading.
2) Go For an Extended Soak
For a truly unique experience, set your friend up with a soak in a sensory deprivation tank. These salt-water tanks allow people to float and rest in water for the ultimate in relaxation. If this is not available in your area, find a location where you can both soak in a hot tub. Often health spas and saunas will have these facilities available.
3) Take a Hike
Do a little research and planning and you can surprise your friend with a day to remember. National parks are available in every state, and they are an affordable way to get back to nature. Pack a picnic with foods and drinks that you know your best friend loves. This way, when you start to get tired with hiking and admiring the beautiful scenery, you can take a break and enjoy something delicious. Be sure to also pack a tempting dessert!
4) Go on an Adventure
Celebrate your best friend's birthday in style with an adventurous tour in your area. If you live near a river, look into whitewater rafting or kayaking. If your best friend doesn't mind heights, consider bungee jumping, sky diving, or hang gliding. You can't go wrong with a trip to an amusement park, either. With a little planning and work, you can give your friend the best birthday ever.