I like the anchor chart on the inspired apple
msk1ell blogspot has some cute papers to use.
You could do a cute lift-the-flap (beginning/middle/end).
-what the teacher wants blog - this site won't let me link it. Sorry!
If you have a pinterest account, search beginning, middle, end. There are lots of good ideas.
Book suggestions: Stellaluna, The Very Hungry Caterpillar, Marley Goes to School, Chrysanthemum, Cloudy with a Chance of Meatballs, Jan Brett books, The Snowy Day, Robert Munsch books, .
I would use a high interest picture book
-a chapter book might be hard for them to sit through this time of year.
I teach K and most of my kindergarteners can write multiple sentences. Some may need help sound stretching words but should be mostly independent by this time of the year. You would be safe having them write at least a sentence and illustrate for beginning, middle, end. I have also taught first for 12+ years so they would definitely be able to write a beginning/middle/end.