In my last post I told you about RainFallCrafts and her wonderful needle size markers. She also makes beautiful end stops and stitch markers. Definitely worth a look!
Here is another shot showing how I use the needle size stitch markers in my own case. I have multiple sets of tips sizes 4-7 so my top row has two groups of these sizes, and I use the needle size stitch markers on the second set so that I don't have to guess or count (or measure) to figure out which size they are. The sets on the left in both the upper and lower rows are easy enough to figure out just by counting.
And yes, you may notice that in the lower row I also have one lone pair of size 3 tips.