Easy project that has helped us stay more organized. We use Cozi to maintain the calendar, but this allows us to highlight things that the kiddos need to know during the week. We keep the chore schedule, laundry schedule, meal plan, and out of routine activities on the week calendar so the kids can tell what is going on at a glance. The allowance is also hanging up at the top as an incentive to get their respective jobs done for the week. I used galvanized sheet metal glued onto a 1/4 inch plywood base and coated it with whiteboard paint. This allows it to be magnetic and easily written on. Love the letter holder for homework and important paperwork.
Things we have used it for so far:
Activity schedule (swimming lessons, soccer practice, etc.)
Unusual activities (parties, movie night, etc.)
School stuff (project due, spirit week, etc.)
Room of the week: what part of the house gets a deep clean this week.
Servant of the week: which kid is the designated helper for non-chore activities when an extra hand is needed.
We are still figuring out all the ways to use this to good effect, but the kids really like being able to see what is coming up in the schedule for the week.