Tsukumogami
付喪神 - Household items that have come to life
Examples



1. Areas the author has deviated from traditional ideas.
Fun Kanji Notes:
2. It might also be written with different kanji (九十九神 - 99 kami (gods) or 九十九髪 - hair of 99 (years of age)). This may be where the 100 years aspect comes into play.
References
Dr Emily Vair-Turnbull
That picture of the Chou is the most adorable thing. :D There's so much potential for different ideas here.