(Image credit: Apartment Therapy)

When Kirsten Chapman’s baby demonstrated the classic infant fascination with keys, she set out to find a safe, green alternative that wasn’t made of plastic or unknown metals. No dice. So Kirsten decided to make them herself and came up with Kleynimals.

Kleynimals are safe, non-toxic, food-grade stainless steel play keys for babies six months and up. Eli the elephant, Gus the giraffe and Leo the lion are the stars of each customizable set. $24 at Kleynimals, engraving is extra.

(Image: Kleynimals)