Are you the keeper of birthdays in your family? If so, a thoughtful and useful gift is to give calendars to family members with family birthdays written in. You can get fancy and make one on Shutterfly or you can get out a pen and write them in. Start with a cute calendar the person will like. Get out your birthday book. Write in the birthdays (and anniversaries) for each month. Another idea is to glue pictures of the birthday person instead of writing in their name.
This is one of the Christmas gifts I give to my brother and his family every year. They get a calendar for the new year and they have an easy way to remember birthdays.