This is my favourite printable calendar site.
I print one out for each month and hang it on the wall and mark appointments, schedules and such things on it, so *everyone* in the family can check it and will know what we're planning to do each day. DH has trouble remembering it's there (haha) and still relies on me to tell him what is going on, but the girls check it and mark their things on it.
Today I've marked when our library books are due and the time the basketball game starts Tuesday. : )