Keeping track of cards to send

Hello it’s me again 🤣

I was wondering if some of you would be willing to share how you keep track of what cards you have decided to send and then sent when someone makes a request?

I have a five valentines I need to do still and I swear I wrote 2 already. It won’t bother me to send another just incase, maybe those two people need the extra love in their mailboxes. I just want to keep track so I know for myself.

(photo for fun of the little sketch my dad’s friend drew in the Christmas card he sent me. I am not sure if it’s an elf or if it’s my dad 🤣)