Takochu are octopus toys created by the Japanese company Pine, made in a wide range of colors in plastic/acrylic. They are small and stack on top of one another.
They can be quite expensive and difficult to find outside Japan, so why not making them by yourself, larger and softer?
They make cheap and cute gifts for friends and family (did you know that the octopus -tako in Japanese- is a good luck charm for Japanese students?)
So take your hooks and have fun!