Tsukumogami
Demons
Tsukumogami are an entire class of yokai and obake, comprising ordinary household items that have come to life on the anniversary of their one-hundredth birthday. This virtually unlimited classification includes Bakezouri (straw sandals), Karakasa (old umbrellas), Kameosa (old sake jars), and Morinji-no-kama (tea kettles).
Relevance to Inuyasha
While these sorts of demons are very prevalent in many other anime and manga series, they do not make an appearance in Inuyasha until very late in the series. In chapter 505 when Shippo's fellow kitsune transform into these silly sorts of demons.