This is a wonderful packet to do after you read the story If You Take A Mouse To School by Laura Numeroff.
The packet includes a class made book. (Templates for preschool through second grade, plus a blank one to fill in with whatever you teach.) Students complete the writing prompt: If you take a child to kindergarten they will...
They color the mouse and then illustrate their page. Collect, collate and add a cover. Read together as a whole group activity. Each child shares their own page. Be sure and make a sample of your own. I made up an example that you could also share or use as a sweet poster.
I've also included bookmarks for children to color. Older students can write why they had a great first day on the back.