What to do for my birthday?

I'll be 13 soon and I was wondering what I should do for my birthday. My mom said no boys, period. Lol, But I want it to be fun WITHOUT us having to spend a lot of money. And usually people invite guys to their bdays, but I can't so I want my party to still be fun and entertaining even though boys are not allowed. We have a pool, so I was thinking that maybe I can invite some people over and we can swim, have karaoke inside, and they could go canoeing on our pond (which will be very interesting...) And 3 of my closest friends could spend the night and we could do makeovers, watch movies, etc :) So tell me if you think that this sounds good. And what can I do to make it even more fun and stuff??