STOP, stop sign, witches legs, dachshund, Owl. My favorite would be witches legs i.e. Wizard of Oz.

Anything in nature that you like...cats, dogs, frogs, owls, mice, butterflies, flowers, sea creatures, or your name or "welcome" in a train or owls or paw prints or tulips or if it's for the kitchen, how about tea cups or tea pots or cupcakes or seasonal like snow people or ginger bread or elves or autumn leaves or whatever you fancy...like music or books or shoes or sewing stuff like spools and scissors.

A few ideas !