Heh, yes those magnets are really strong. I actually "installed" a pad on the back to reduce some of the magnetism. When I was toying with this idea I ran it past an older family member. The first thing they did was stick it to the fridge and I heard a big "Wham" as it stuck. Then watching them try to remove it from the fridge was entertaining yet troublesome. The foam pad helps out a lot.



Next to a quarter to give you an idea of size.