How about a Book that the children make the parts and you put together..
Print out a cover that says
My Kindergarten
Name of school
Name of teacher and the year.
Then allow each child to draw a picture for the cover.. Make sure they sign it with their name.
First page Place the name of the teacher on the top of the page.. Have each child draw a picture of their teacher.
Second page" My favorite book"
Have the children write the name of their favorite book and a picture about the book.
Third Page "My Classmates".. Include the names of all of the children.. Maybe all the way around the page. Have this child draw a picture about friendship.
Fourth page "My favorite part of Kindergarten" Have them write what this is and draw a picture of it.. Going to the library, playing on the playground, etc..
Fifth page "Lunch" Have them draw a picture of their favorite lunch and label the items..
You get the idea. Make as many pages as you think the kids can handle.
I would suggest you see if you can send out a packet, with instructions so that the children can do this as homework over a long period of time. . Make sure every page is signed (autographed)by the student.
Give a due date. collect them and have them bound.. At our school they have book binding clips and a little machine, I bet your school does too.
Also laminate the cover and the Back cover to give it some strength.
Maybe you can make color copies of all of the drawings of the teacher and present it to her as one of her end of the school year gifts..
I know this sounds involved ask other parents to help you with this project. One of our homeroom moms did this with our daughters first grade class and we all have LOVED it.. we keep it on our regular book shelves and still love looking through it..