The first on looks a little bit like a wall socket, but it's really a cute papercraft pig! ;o) There's also a cute dentist bear reminding you to brush your teeth to keep them clean and healthy, and some other simple papercraft models.
Download + build your own cute papercraft pig, dentist bear and more (by Putiya sozai no puchi-chi):
(download instructions: click the "ダウンロード（PDF）" links underneath the pictures on the Putiya sozai no puchi-chi website)
(old link: http://putiya.com/4paper_craft_link01.html)