Sometimes a toy comes into the office and everyone just sits gawping at it struggling to remember the time before it arrived the space coaster marble run is one such toy an indescribably cool piece of sci fi silliness thats part marble run part physics experiment after youve constructed it a pretty epic and rewarding task in itself simply turn it on put the two ball bearings in the central shaft and watch them whiz round the rail at breakneck speeds its a self perpetuating ourobor