Look on nearly everyone’s refrigerator doors and you will most likely find custom magnets and many of them promote some business or worthy cause. This is the most popular and favorite place for free advertising in the world!
When you think about it, you give a customer (or prospective customer) your free magnet which they then take home. Next, they place that onto their fridge door and then see them all the time after that.
Kids love to look at them, move them around, and rearrange them according to color or size, or whatever strikes them at the moment.