The German designer Fred Voss created this fascinating "rhomboid dodechedron" block set.  With two different colors of blocks (natural and either red or green, depending on the set), this construction toy has a surprising appeal and seemingly limitless combinations.  It's 40 blocks and 5-piece base elements have sat on my coffee table for months, inviting any and all to rearrange and re-design.  Designs can be relatively flat or climb upwards.  The blocks are smooth and nice to the touch and beautifully and precisely manufactured.  Like many of the cool toys we find in Europe, Pyrom is equally at home in the playroom and on the desktop.