A rocking horse
A rocking horse was a child's toy, usually made of wood and in the shape of a horse. Its rocking motion approximated the movements of an equine when ridden.
In 2024, Kore Soong was playing a video file that showed Adam Soong playing with a little girl that was one of her predecessors. One of the toys that could be seen in her room was a rocking horse, except it wasn't a toy horse, it was a giraffe. (PIC: "Two of One")
Naomi Wildman had a rocking horse in her quarters aboard the USS Voyager. (VOY: "Mortal Coil", "Infinite Regress")