The problem is that family calendars are, um, ugly. OK, probably not all of them. But the ones I found when I realized that my iphone would explode if I tried to make it keep up with our family's current Will is here, Evie is there, Briton is over here and I'm trying to squeeze a bit of work in the middle schedule. And then I found the cork squares.
These are 5x5 1/2 inch thick tiles. If you can't find this size, you could cut down some of the bigger ones that are out there. Or make a really big calendar. For us, I wanted to work a week at a time but you could also do a whole month.
Once the letters are one, smooth them down with your finger nail and make sure the edges are totally stuck on so that paint doesn't seep under.
For permanent or semi permanent schedule items I wrote with white pen with the idea that next term I can paint over those and add new ones, weekly items that change get written up with chalk and wiped away at the end of the week.
So far it's working well. Keeping my head straight and mostly making sure we get where we need to be when we need to be there.
Do you use a family calendar? How does it work in your house?