Novelty ties are best described as neckties with a particular theme, for example cats or science. They will usually either have a full image down the length of the tie or multiple small images forming a pattern across the tie. Novelty ties are a popular choice for gifts as they can be tailored exactly to the interests of an individual, and are often used for teachers, doctors and scientists.
He was not normally one for jollity or humour. The novelty tie had been given to him as a gift and he felt compelled to wear it, lest he offend her. He peered down at his collection of ties in the open drawer, and with a wry smile looked back at himself in the mirror. She was right after all, the quirkiness was rather amusing, so with a final adjustment he turned to the door to begin his short journey.