trying to come up with some ideas to do for her birthday

What kind of girl is she? Asking randomly will get you answers that vary way to much.

1) Stay safe

2) Most people want to drink on their 21st, so a quick trip to the bar is probably in order. Let her order something, flash her ID, then pay for it for her. Buy her at least one shot and make sure there is lots of giggling and fun-having while she drinks it.

3) More traditional kid-like party ideas are always fun, especially when you start feeling like you're getting old. Grab a few of her friends and see if anyone wants to go bowling, play mini golf, or even go to an arcade

4) Stay safe!

Like it was said before- you kind of need to know what kind of girl she is before you can come upwith ideas for her, otherwise we may say something that she could really dislike and if you go for it then that's the whole experience spoilt, especially since you're doing this because you want her to have a good time.

I did little on my 21st, had a meal with my girlfriend and watched a movie. Then again, I'm a guy and easily pleased as long I'm with my girlfriend, so that probably isn't much help to you.

Whateveryou decide though I hope the day's a good one for the both of you~

You could always cook her favorite meal for her...and if you cant cook it, find somewhere that can make it for you.

Picnic in the park with some paintballing afterward. That's a date.

well i turn 21 in a couple weeks and my boyfriend got me pokemon soulsilver XD lol not even kidding. other than that I have my dog's obedience trials on my actual birthday followed by some random bar hopping. lol i think the bars is almost required for most 21st birthday celebrations.

@Lastemoon, my boyfriend got me Pokemon Platinum for christmas x.x
I know what you mean.

Originally Posted by The Real Nikki

Picnic in the park with some paintballing afterward. That's a date.

lol this sounds perfect lol i might try and do it =^^=

Haha really? I totally just made that up. I think it was in a movie.. sounds fun though.

I love Canada. : D We are legal at the age of 18 (at least in most provinces)!
I can barely wait... I'll be 18 and legal next January. <3

It depends on what she likes. I personally would be happy just hanging out with my friends.

How about you break up with her? That's what my boyfriend did for my...well not 21st birthday but that's what he did for my college graduation...fun. :/

If she's turning 21 I say just take her to a bar and buy her all her drinks.

Originally Posted by The Real Nikki

@Lastemoon, my boyfriend got me Pokemon Platinum for christmas x.x
I know what you mean.

lol pokemon=love?? that's the way to a girls heart :D personally I love it when i come home and my boyfriend has done the dishes or surprises me with dinner =)

Take her out to dinner or maybe a romantic movie and spend time with her!

Depends on what type of girl she is really, though you should check out up-coming events like concerts or comedy clubs or parties to take her to one of them, so that she can kid herself that everyone is partying for her :D