I found the largest rectangle tote from from Thirty One, called [h=3]
Thirty-One Large Utility Tote 11.75"H x 21.5"W x 10"D[/h]is perfect! My 24" ruler lays flat and my cutting pressing board plus everything else I can think of to put in it. The large plastic block bins will fit in them too. I love these totes. Amazon has them. They are quality made and will hold a lot of weight.