This is a modification of my exisiting storage drawers. It has lost the ability to change the number of columns but does now have 2 extra drawer widths - double and quad!
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This allows for larger items to be stored without compromising my original idea of small storage drawers.
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The drawer sizes are:
Half Bin : 25 x 10.5 x 65
Bin : 25 x 24 x 65
Double Bin : 55 x 24 x 65
Quad Bin : 115 x 24 x 65
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UPDATE 1: Small update to rotate the rack ready for printing.
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UPDATE 2: Added new drawers with vertical handles, as suggested by ronthomp.
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UPDATE 3: Added the sizes of the draws in description.
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Sorry for all the fullstops but I can't seem to get blank lines in my text anymore.

Customise the number and type of rows you would like. The normal, double and quad rows are 27mm high and the half row is 13.5mm. Multiply out as needed and then add 1mm to account for the final top wall thickness. The unit is 121mm wide.
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So the RackTEST.stl would be:
(273) (13.51) 1 = 95.5mm
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On a Huxley (the machine I have) the maximum number of normal height rows are 4. On a Mendel that would increase to 7. YMMV on other machines :-)
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Then print out all the draws you need.