The document discusses "shin dogu", which are weird or useless inventions from Japan that follow certain rules: they must be physically built but not patented or for sale, and cannot promote prejudices, taboos, or propaganda. The idea was popularized in a book by Kenji Kawakami describing "Chin dogu" as invention ideas freed from the need for practical utility. Some examples of weird inventions presented include a helmet that holds books, nail polish that ties shoes, and a chewable abacus. The document asks the reader to consider designing their own strange inventions.

1. Shin dogu- 珍 道 具 The art of building weird tools.

2. A shindogu must follow some rules It must be not of real use It must exist, must be actually built It is not for sale It must be for everyday activities It cannot be patented It must be anarchic It cannot contain propaganda It cannot promote prejudices It cannot contain any Taboo

3. Mr. Kawakami is a Japanese inventor and writer who first made the idea prominent in a book translated into English, in the mid-nineties, as 101 Un-useless Japanese Inventions: The Art of Chindogu. What is that? Kenji Kawakami describes Chin doguas "invention dropouts," anarchically brilliant ideas that have broken free from "the suffocating historical dominance of conservative utility." Why a Chin dogu? One might wish to design Chin dogufor a number of reasons, for example to improve one's mental agility, to develop them as an art form, or simply to reveal in a purely creative act without worrying about utility or making money.

4. What are these for? Slippers Broom Spade sweep

5. AND THIS? Helmet Holder Sleep

6. Sunflower Hairguard Eat A flower?

7. Fan Wrist Cool

8. Butter stick Spread

9. ??? Magnifying glass Light

10. Hat Toilet paper Ear Extenders

11. Portable Zebra crossing

12. Jacket watch

13. Baby petticoat Mop Umbrella Collect

14. Peg Stickers Eat

15. Steel sandals

16. Jacknife Gardening Multiple

17. Chin Hold-Sleep ???

18. Nails Polish Tie…

19. sudokus

20. Helmet Hold-Read Cap Pillow

21. Chew Counter Socks

22. ??????

23. Can you think of any weird invention now?