Little Things That Are Hard To Find In A Store

Have you ever noticed that there are little things you just can't live without and yet are difficult to find when you are shopping for them!
Well today I was looking, in a department type store, for a fingernail scrub brush. You know those silly little plastic brushes you use when you have been out working in the garden or on your car, to clean the crud out from under your fingernails.
I couldn't believe that I had such a difficult time finding one!
Just as I asked a clerk who asked another and they both shrugged their shoulders, I wondering into the grocery store and finally found it!
Is it me or are some of these things hard to find!