After realising the incredible strength of your super magnets, we had some fear for our new high-grade stainless steel refrigerator, which also serves as a pin board in the kitchen.
Even the small spheres would be capable of causing dents in the surface, which we obviously didn't want to risk.
While my wife was busy creating other felted objects, I grabbed a bit of raw wool and soft soap and gave each magnet sphere a colorful coat of felt.
The felt protects the refrigerator from hard contact with magnet and even looks good.
Since each felt magnet is handmade, each has a unique size and color.