We keep tabs on activities, games, project due dates, etc., with a wall-size monthly calendar in the kitchen/dining room area of our small apartment. I got the idea from an article in Cottage Living magazine and then tweaked it a bit for my needs. The calendar has 35 8"x8" squares (1 for each day in a month, plus 4 blank squares for inspirational quotes.). I use thumb tacks to hang permission slips, meeting agendas and party invitations, etc. right on the calendar. I use 4'x6' Post-it notes or index cards to post notes such as "Parent conference - 3pm", "Game - 8am, field 2". Since it's large and in a central area, it's easy for us to see/update. Having the permission slip, etc right on the calendar means we don't lose paperwork or miss important deadlines. And since the calendar is covered with a pretty neutral-colored linen fabric, it's attractive as well as functional (I didn't want a giant eyesore in my kitchen.).