Dawn gave you a good idea.
But I have to point out that I think it's a better idea to give your kids their own special day (each their own party) if you can possibly swing it.
It's so much nicer for kids to be treated specially and not have to share that with anyone. When kids are close together in some way (age, birthday, etcetera) then relatives often expect them to be similar or to share.
They should like the same things (so people give them identical presents) or look like each other (so they get the same sweater, just in a different color) or share their toys (even if it's brand new) and so on.
If your kids play together often and end up doing a lot of joint activities (for whatever reason), then maybe it would be nice to let each of them shine for a day - without their accompanying sibling in a costarring role.
Just something to think about!
