Instead of having a mish-mash of lists, cards or miscellany we attach to the fridge so as not to forget, try relocating the vitals to a cupboard nearby. This is fulfilled by first measuring then lining the desired space with a magnetic surface. In this case, only a few dollars of materials from the hardware store does quite nicely. Industrial strength double sided tape avoided any drilling or holes to speak of.
The result is a cleaner fridge and upon opening the pantry, you can view your calendar or be reminded of a favorite picture.