grigorusha Elemental Cube - world's smallest Rubik's Cube 8mm
world's smallest Rubik's Cube - for sale
its full functionaly Rubik's cube in small size (8mm)
forum link - http://www.twistypuzzles.com/forum/viewtopic.php?f=15&t=21839
youtube review video - http://www.youtube.com/watch?v=Q0UN50FLwtc
 My puzzle Ten Cube world's smallest Rubik's Cube 10mm (same as Microbic Rubik's Cube 12mm) got into the Guinness Book! and I'm absolutely nothing to do did not do;)
http://www.guinessworldrecords.com/Search/Details/Smallest-Rubik's-Cube/74256.htm

very interesting: 8*8 mm cube placed in a 08/08 day

how to assemble this Cube:
http://www.shapeways.com/forum/index.php?t=msg&goto=33589

grigorusha Revelation Cube - 20mm (Micro 4x4x4 cube)
forum: http://www.twistypuzzles.com/forum/viewtopic.php?f=15&t=20939

grigorusha Elementalix - 15mm (Micro Pyraminx)
The smallest pyraminx puzzle in the World!
forum link - http://twistypuzzles.com/forum/viewtopic.php?f=15&p=233873
http://bbs.mf8.com.cn/viewthread.php?tid=64111&extra=page%3D1
video: http://www.youtube.com/watch?v=CBGw5Vc3hwc

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also World's smallest Tetraminx
forum link - http://twistypuzzles.com/forum/viewtopic.php?f=15&t=19910
video: http://www.youtube.com/watch?v=ss9B_bs1hb4

you can buy stickers-set there
http://www.rubikkocka.hu/pages/kockamatricaeng.htm

grigorusha MicroMinx
World's smallest MegaMinx - 15mm

forum: http://www.twistypuzzles.com/forum/viewtopic.php?uid=3835&f=15&t=23823

grigorusha Skewbic - 10mm
The smallest Skewb in the World!
forum link - http://www.twistypuzzles.com/forum/viewtopic.php?f=15&t=23699