https://designmanifestos.org/kenji-kawakami-the-10-tenets-of-chindogu/
1. CHINDOGU MUST BE (ALMOST) COMPLETELY USELESSThis is the utmost tenet. If your invention is a real help and you use it all the time, it’s not chindogu....
kenji kawakamitenetschindogudesignmanifestos