My frig is very pedestrian: at the top a souvenir card from Thailand, below it the council's collections dates for garbage, recycling and other. The one at the bottom shows how to read the water meter.
On the other side we have the bus timetable, and various other magnets, mostly giving phone numbers.
I have a lot of magnets in an ice cream container, which I remember seeing just after we moved house. One day I will find them. They were more interesting.