Our Labrador Retriever Jupiter (R.I.P) found this glass apple for us in Boulder.
When we had our condo on 34th Street, we'd walk down the block a couple of times per day and let him romp around at Howard Heuston Park to "get the crazies" out. We'd generally bring out a tennis racket and a couple of balls to send them back and forth across the park for him.
During one outing, he came back with this tennis ball-sized glass apple, retrieved in the tall grass. It's remained one of our few decorations ever since.