simple baby/child friendly foodstuff for bbq party?

[June2009]

We're celebrating dd's 1st bday with bbq at home with friends and family.
there will be 4 babies (1yo) and a few children( 3yo, 6yo and 13/14yo).

What baby friendly food/cakes can I make/buy just so that there is something there for them?
We're not getting much help with the cooking so simple things would be more adequate

Baked potatoes, mini corn on the cob, ratatouille.

Same thing that you're eating
(unless it's piri piri hot as hell chicken or something)

DS loved cous cous at that age, and all kids love sausages