I know lurking in my house somewhere is The Great Needle Eater hearafter known as TGNE. TGNE is selective and only eats the needles needed for the next project. At one point TGNE had a craving for size 8 needles. The length didn't make any difference but it had to be a size 8.
Consequently, I purchased several size 8 needles over a period of months. You know when you want to start a project, you want to start it NOW. Anyway, TGNE subsequently regurgitated the size 8s and now I could open a yarn shop specializing in size 8 needles. Well, it could also have size 10 1/2 and 13s as well.
Now TGNE has started on size 7s. Naturally, I need size 7s for a project I want to start right away so I am off to the yarn shop to buy size 7s so the old size 7s can be regurgitated and reappear once again.