Colin is right, don't forget the step stool for the littlies.
You'll need to explain to them first not to hold onto the eye piece or you'll be having to realign the scope all night.
If they are really young, they will need to learn to close one eye and look through the other.
Faint fuzzies won't excite, but big fat globular clusters and planets do.
So Saturn and Mars will probably be first on the agenda, followed by Omega Centauri. The Jewel Box is lovely too, with all those coloured stars.
Have fun!! You'll get a blast out of all the oohs and aaahs when they first see Saturn.
