They could create and decorate a summer journal/calendar for collecting the amazing moments of their summer.
Create a monthly calendar for each month or weekly calendars, and writing pages for each day. Add a page for each wk that is a pocket (folded piece of paper). Give each child a front/back cover and either hole punch and lace it up or staple it all together for them (after THEY build it).
They can decorate the covers while others finish. They could draw things that they already know they are going to do.
As a teacher, I always give my students summer homework...something for every day of the week...fun-ish stuff, like . ..
- have a play date and share a piece of fruit with a friend, -sit in your yard in the early morning and listen to all the sounds. Make a list.
-Watch a sun set, write a poem.
-find three objects and make up a game that uses them.
-try something new
-play with someone you've never played with before
-do something to help someone else.
The list goes on and on, but there is a place for them to record about each day.