Rachel, I've been homeschooling and I still leave my daughter notes. I'll use one as a bookmark in her reading book or under her napkin at lunch.
My daughter loves when I go in while she's taking and shower and I write on or draw a silly picture on the steamy mirror.
It takes a bit more creativity but you definitely should do it! I even leave sticky notes in the fridge because when she gets up she'll go pour herself some milk.
You'll have to tell me what you do!