It's probably goofy to most but it works for me. I separate the tools by fraction. 2 = 1/2", 4 = 1/4", 3/4", 8 = 1/8", 3/8" 5/8", 7/8".
If I'm looking for a size, it is easier to differentiate between say, 1/8" & 3/8" than to have sizes with very little difference side by side. Of course...