In our family, we always have two birthday parties. One for the family, usually at home, and one for the friends, usually at a party place. :)
I never send out invites for the family party. I usually just call everyone and tell them when it is.
This year for Dylan's 8th birthday, I decided I wanted to send out something. So, I chalked the invite on my driveway, asked Dylan to sit near it and then took a photo. Voila, there is my invite.
Cool idea, huh?