Chiyogami is colorful handmade paper printed with Japanese traditional patterns or designs, and is usually used by girls for making kimono-clad dolls, small boxes, or bookmarks.
Once you take a look at Isetatsu's Edo-style chiyogami and the process of making it, though, you will no longer be able to see the paper as just a child's toy. Their chiyogami designs look more like ukiyo-e woodblock prints, that could be displayed as artworks by themselves.
Isetatsu is now the only manufacturer/retailer of Edo-style chiyogami in Tokyo. They started the business in 1864, the end of the Edo Period, originally as a wholesaler of ukiyo-e and uchiwa (fans). Chiyogami was generally handled at nishiki-e shops at that time, and is believed to have been printed by ukiyo-e craftsmen.