For those wondering, those are key chains for the "Yamato Hotel" and the "Musashi Inn"

Here is the photo Masumi used as reference
https://twitter.com/yariho_t/status/614435063053185024

Yariho_t:
先日のイベントでこちらの方（@Zancals ）のキーホルダーをフォロワさんに買ってきていただいたのです(*´∀｀*)