The Ningyo-do Bunko Database is a huge online collection of watercolor paintings by Kawasaki Kyosen (1877-1942). The collection consists of over 5,000 still-life images of antique toys and folk crafts from across Japan, including a few lovely octopus-themed items.
Papercraft octopus, Osaka
Paper octopus balloon (1930)
"Hanamaki" clay doll octopus and child, Iwate prefecture
Top: Roly-poly toy // Bottom: Bell/whistle (both from Aichi prefecture, 1932)
Sesame seed roaster (with eyeball that pops out)
Octopus pot/whistle, Aichi prefecture (1933)
Dancing octopus papier-mache doll from Kameido Tenjin Shrine, Tokyo
Octopus kite, Niigata prefecture (1932)
"Hanamaki" clay doll octopus, Iwate prefecture (1923)
The collection is organized into 60 galleries (Japanese only) that can be navigated by clicking the thumbnail images and arrows.