Kavandar
The calendar on many people's fridge growing up that kept track of all the activities and events. Moms are the main (sometimes only) users of them and yell at all family members for not writing things on it and things get forgotten.
"I'm not sure if I can go out that night, let me check the Kavandar," or "We were supposed to bring beer to that party, but completely forgot because it wasn't on the Kavandar."