Ours is running from 10am to 11.30am as usual. The running order is as follows:-
10am limited toys available (mainly big , ride-on type stuff)
10.15 into church for look at crib and sing of Away In A Manger with the minister
(this also gives time for helpers to put out food etc)
10.30 back into church hall, parents load up bits of food on a plate, children eat.
10.45 ish Father christmas arrives, children come up one at a time to sit on his knee, cry whilst having photo taken, and get a present (books from Book People)
11.15ish FC leaves, children play on toys, we have a bit of a sing-song, Hokey Cokey etc until 11.30 and they all leave very happy!
I don't know if there's much you can arrange that's going to suit the Toddler Group age group, presuming they are 0-4. Pass the Parcel? Play Doh table? Get some instruments out and let them shake/bang to nursery rhymes.
We are not very adventurous, but nobody has complained to date! Could you get some plain party hats or crowns and get them to colour them or stick stickers on? Ice biscuits?
HTHBNCIW (hope that helps but not convinced it will!)