Make wind chimes out of them!

ONE CHRISTMAS I FOUND A LARGE BOX OF KEYS AT A GARAGE SALE. I TOOK THEM TO MY SUNDAY SCHOOL CLASS AND WE PAINTED THEM WITH COLORED MARKERS, CHRISTMAS COLORS AND EVERY CHILD TOOK SOME HOME FOR A DIFFERENT KIND OF ORNAMENT. SO MUCH FUN

The local scrap dealers, whom my housemate hits regularly--takes them without question, the plain ones, anyway. (We haven't found any of the other types and offered them for recycling yet.)

Snowman ornament craft - https://craftsbyamanda.com/recycled-key-snowman-ornaments/

Fishing weights - perfect for mid-swimmers !