ibex94, Tee-Hee-Hee! Multiplying Fairies! All I can imagine is fairies practicing their multiplication facts, 1x5 =5, 2X5=10 or 3x5=15 and for the more advanced fairies, a 6X7 grid equals 35, or 14 HST's X 30 blocks is 420 HSTs. Multiplying fairies, made me smile.