F200
Phil @ MAKE writes:
This device “shreds” plastic bottles to make them easier to carry and to make crafts with them.

Aiming to reduce the volume of PET bottles carried by “catadores” (people who collect bottles and other kinds of waste from streets), Takashi Utsumi developed a device with which one can rapidly shred PET bottles into ribbons suitable for use in crafts.

PET bottles shredder (filetador) – [via] Link.
More:
Pet Sawaguzo Installation1
Pet Sawaguzo Installation2
Miwa Koizumi: PET project – plastic water bottles – Link.