Create a side pocket on each month.
Purchase easel with rings at top then punch holes to fit each monthly pocket. Put a card in each month listing important sates: Anniversary's Birthdays events that happen each year.
These are my designs using G45 papers, spellbinder and other Dies.
I put a month on each side of pocket, so there are 6 pockets and you just open rings each month and flip them.
Use foam tape at bottom of each pocket. This makes it easy to pull out the card.