The skill and craftsmanship that goes into building a traditional igloo is remarkable. This brilliantly simple toy makes it fun and easy to build your own version at home. Just pack the buckets full of snow to produce interlocking bricks with the perfect angle to build an igloo that’s 6′ in diameter. Howard Graham originally created the design in the 1980’s, but it sat on the shelf until 2001 when Howard, his brother Bob and a friend (Warren Huscroft) decided to pursue the idea.