Interlocking

Hamburger Puzzle
Hammerkreuz 1
Hammerkreuz 2
Handed Halfcubes
Happiness Cube #7
Hard & Easy
Haselgrove Box
Heart to Heart
Heavy Lifter
Hedgehog
Hedgehog Burr
Helix the Burr
Hellas Cube
Hermaphroditic Blocks
Hermit Cube
Hex Screws!
Hexator
Hog Wild 1
Hog Wild 2
Holey Cross