This is an item of stationery (paper or writing goods), or other small merchandise such as good-luck charms, mascot straps, et cetera.
What a warehouse find! These sweet cloisonne pins with clutch pinbacks were produced by Kaiyodo back in 1996. Saki Nijino and Megumi Mikihara have come straight from "Tokimeki Memorial" to you, and want to share your adventures as they ride along on your coat collar, shirt lapel, or messenger bag! Each colorful pin is a petite 3cm tall, and each one is cute as can be!