ok for an activity to keep them quiet, I'm thinking Ziploc bags with hairgel in it zipped up and sealed with packing tape or ducktape . Sort of ends up being a little like an etch a sketch, magnadoodle thing. you can color the gel too.
Icecubes/ice pops on a stick with food coloring or icecubes made from tempra paint and give them paper, and they hold the stick and paint with the ice as it melts.
pre cut 5 tons of shaped and let them make a collage from cicles and triangles. Our VBS classes all ages 4 yos-5th graders loved taking a square of contact paper taping it so the sticky side was up and just placing on a majillion squares of tissue paper. if you cover all the sticky with tissue paper it makes a suncather kind of thing.
for books
Parts by Ted Arnold and More Parts is about a boy misunderstanding grown ups idioms like my heart is breaking he takes it literally. You could scan or xerox the main character and make a die and the kids have to build the character they can roll a head, and then roll the die till the arm show and then a leg etc.
John LIthgow has a book and CD my kids LOVE called " The run away pancake", it's a play similar to the gingerbread man, AWESOME!!!
Just about any books by Kevin Henke (s?) are really really good,
Chrysanthum about being different, Julius baby of the world, Owen about loveys, Shelia Rae, Tons more all about social type issues.
I second the GIve a Mouse a Cookie book from laura Numeroff
What about Eric Carle and give them finger paints, there are lots of homemade finger paint recipies. I lilke the GRouchy Lady bug the best.
Any of the Classic Fairy tales like Red Riding Hood Cinderella etc, Paul Gauldone or somethign like that has re told them, and there is another author too with real cartoomy looking characters and good simple story. I bet the kids would love to retell those.
Oh I read Owl babies by Martin Wadell- There is a refrain that the little-est owls says I want my mommy, sooo cute.
and My very very veyr veyr very fav author team is Don and Audrey Wood, LOVE!!! King Bidgood is in the Bath(tub) and he won't get out, the refrain is: Oh who knows what to do??? they also wrote the Napping House and THE LIttle MOuse and the BIg REd RIPE STRAWBERRY Kids go crazy for that one. you could serve strawberries or scent it the playdough with strawberry koolaide if you make homemade playdough, don't know it thtat would work on name brand. taste test some strawberries yumm-o!
If you are going to be doing this for a while Vivian Paley wrote a great book about a year she spent getting preschoolers I think, to create stories to act out and how much they learned from doing it. Fascinating.
There is also like a teacher book called Story STretchers that gives a popular chldren's book and gives art and movement activites to go with it.
as for children's Chapterbooks:
Junie B is fun to read aloud, but bad grammar bugs me,
Magic Tree house is suspense ful, but kindergarteners don't love listening to it in a group settting in my experience
Calendar mysteries by Ron Roy are ok but again i don't love reading them to groups.
Likes seem to love Puppy Place books by Ellen Miles
Roal Dahl is good --Charlie and the chocolate factory, Mathida, James and the Giant peach
Little house on the praire is good, Charlottes web is good but for a bit older, the language is sooo flowery, Wizard of Oz peter Pan, the indian in the cupboard (language)
I did an afterschool program and they loved Wayside school is falling Down by louis Sacher (sp) a bit of potty humor isn't the word but weird amusement
The judy blume books LIke Super Fudge and Tales of a fourth grade nothing, one of them ruined Santa for my firstgrader so be aware of that. the teacher had skippped that chapter but he loved the bools so much he got them from the library himself and read them.
I've got lots more in my head but i think that should get you started, If you want to bounce any more ideas please pm me, I' guess children's lit is a bit of a passion for me.
oh have you ever brough in a random box of objects and had them make up a story as they pull one object of a time out of the box. that's fun!
and while i know you mentioned 2nd- 4th, what age are you actually working with??? Mo willems seems young for them? oh duh, I can't read, you said mixed age. got it.
have fun!!