Horsey birthday party ideas for 14th birthday?

Hiya it's my fourteenth birthday next month, and a horsey birthday would be fun, but I don't know what to do! I want it to be original and unusual and fun! BUT, none of my friends have horses, and I just have a share horse, so although we do have acsess to one horse, they can't all ride her as she's quite old and it'd be confusing and tiring for her. We could still do something WITH her though, but just not on her probably. I'd rather I didn't have a party at a riding school cos I don't really know any good ones in the area that I'd like to have a party at, also it's not very original idea. But i'd really like it to be horsey! Imaginative ideas please? 10 easy points :)