Take a field trip to the toy store...and just hang out for a while.
The employees will love you for messing with all their toys and not spending a dime :)
Try a little blind taste testing:
Have them take a bite of different kinds of foods and identify each one.
And of course it wouldn't be fair unless the mama got to try some too.
Check out the goop! (When I left the room it was in the measuring cups, when I came back it was all over the table. Rascals.) Mix 1 cup Cornstarch with a little bit of water until you get a semi thin mixture.
Be fashion designers for the day.
And be sure not to forget the glitter.
Enlist their help in prepackaging their lunches. They're always willing to help when it involves food....am I right?
Remember this old camp skit? They'll go crazy for it.
And it never hurts to end the day with a little prank on Daddy...
(even though it may not always work out as well as you hope :)