Whether on your feet or a bridge, this shape provides support and strength

A quiet guardian by the door, welcoming feet with a cozy embrace. Often found lying flat, yet stands firm against muddy intruders.

You click me to hold the hatch, A metallic guardian, your safety catch. Attention robbers who come to snatch, With me in place, you've met your match.

Whether I'm a gift or a sport Get me near a kitty cat If it fits I sits.

Either flesh or plastic, still holds milk.