This adorable sticker sheet by Mindwave Japan is called Happy Hibernation and includes a bunch of adorable creatures and buried treasures! These would look lovely decorating a letter or an envelope, a calendar, diary, fridge.. (or anything!)
Great to slip inside a card to a friend in the mail for a surprise ♥

This is an Official Mindwave product. Made in Japan.
Sticker sheet measures 17cm x 9cm