My students are not provided with agenda's this year, but I believe scheduling and communication with home needs to be there to encourage good organization skills. I have chosen to include the spelling list on the first day of the week to ensure it goes home and they practice their words.
Reading is the most important bit of homework I give (pretty much the only homework) so I have put a spot for reading and a few lines if there are any other reminders. For the most part I use an app to communicate with home, but this is just an extra check for important memos ie: Picture day, or Math test. We use duotangs at our school with pockets for information to go home.