Not sure if this is the right place for it, but JINS, a Japanese eyeglasses brand has partnered up with Pokemon to provide some pretty neat, subtle frames:
I’ve personally worn JINS glasses for 5+ years and they’re decent quality. In particular, they have a few frames & accessories that are themed after specific Pokemon (Snorlax, Mew, Eevee, the starters, Lugia, Ho-oh), so species-specific collectors might be interested.