People, kid people, can't get enough predictability. They like change the least of anyone, with the exception (maybe) of real old people.
If it ain't broke don't fix it.
Mannying one day, I made this kind of pita sandwich for a 6 y/o; he dug it.
LUNCH
PITA, SWISS CHEESE, TURKY BOLOGNA, PICKLES When, hours later, I asked him what he wanted for dinner, he said "lunch". I obliged.
DINNER
CHICKEN, SWISS CHEESE, TURKY BOLOGNA, BASIL
Use tooth picks to keep the chicken rolled up right. Remove picks before serving or at least warn them.