Summarize:

How much money will you realistically be asking your friends to contribute to the outing? A celebration can cost as little as ten dollars per person or cost over a hundred dollars per person. So consider the budgets of you and your friends. Write down a break down of your night and the approximate varied costs. Include transportation costs, ticket costs, drinks and food. If you and your friends make different amounts of money, ask one of your close friends how much money they think is appropriate to ask your friends to spend. Your friends are going to make your birthday great. Keeping everyone within their budgets will help everyone focus on your birthday and not their pocket books. If you and your friends have enough money to go out, consider doing something fun like going to a spa, going camping, going a concert, going to a destination like Vegas or going to a sports event. These kinds of events are great because they can be very memorable and last for several hours or days. This will keep everyone together and occupied for a good amount of time. These activities can also do a good job of bonding people and entertaining everyone. Buying your tickets in advance will also simplify matters for planning. Plan transportation there and home. Designate a couple of drivers and have everyone get together before and after at a central location for food and/or drinks. Pick a nice restaurant or bar to go to before/after the event. If you have one friend that may not be able to spend the same amount as the rest of the group, consider asking a few friends to pool the money to buy your friends' ticket to the event. If you or your friends have tighter budgets, consider having a house party, barbecuing or picnicking at the park. Choose a friend to DJ the event and put up a few balloons and streamers. It is easy to make a birthday seem well put together if you plan for a few key details. You can still make this birthday feel rich if you make it a potluck or tell everyone to bring their own alcohol. Bring a Frisbee, ball or card game. Having a simple game is a good idea to pack, even if it doesn't get used by everyone a small group of people might want to play. You can also find a free music or art show to attend together. Get together before/after at someone's house. Ask everyone in advance if they can pitch in 10 dollars for pizza and/or inexpensive drinks. For example, if you want to do something outside in winter, consider including a bonfire. Or if you are doing something in the summer, think about asking your friend with a pool to have your party at their house. If you can incorporate something season appropriate into your event, it will make it more fun and memorable.
Decide how much you will ask your friends to spend. Go out big. Keep it frugal. Consider the season.