21st Birthday... what to do?

Mommy's been asking me whether I want to have a party for my 21st birthday. At first, I was like, YESH! I want a huge birthday party with all my family members and friends attending. To be honest, the reason why is because I've been to some of my friends' 21st and I saw that they receive loads of pressies from their friends and family members. *insert face with present for eyes*

But, when I think about it more. I don't really want it to be a really awkward event where my college friends and high school friends sit in cliques and I have to walk around entertaining different groups of friends and family members as the host.

Not to mention the cost of booking and eating in a restaurant for a huge amount of people.

So, it got me thinking. I don't want to have a big party for my 21st and yet, I don't want to spend it like any other day. What should I do? Any ideas?