Frogs?...not green amphibians, flower frogs...those spiny, sharp and heavy metal or glass odd looking things a florist puts in bottom of a pot or vase to hold the flower stems.
Try using them in your office as pen holders, stamp and receipt catchers, or to hold a family photo. A friend used them on top of the piano to hold their Christmas cards.
So the next time you are at a garage sale ask if they have frogs...:^)