The key to keeping up with shifting schedules is to find a product that can adjust as the information does. For calendars, that means a lot of (erasable) space. Or just scrap the paper altogether and go digital.

For a purse: Smythson's Classic Featherweight diary is 3 1/2 by 5 1/2 inches, but it has enough space for myriad appointments. To buy: $35, www.smythson.com.

For a desk: This weekly calendar by Kate Spade isn't tied to a specific year, so you can start using it anytime. To buy: $25, www.katespade.com for store locations.

For a wall: The 17-by-22-inch model from Staples is the biggest wall calendar out there — perfect for families. To buy: $3, www.staples.com.