I might be stealing your JJ lunch idea for DD2's birthday. I was actually starting to think about what I'd serve.
Since we've got parties so close together - June (son), July (DD2) and August (DD1) - I don't like to serve the same thing at each party.
I ALWAYS do a taco bar for Son's parties. He loves it and I get tons of compliments on it. And I just do burgers and dogs for DD2's party.
So anyway, thanks for the inspiration.