Wet food measuring cups should be glass, so you can boil your exact amount of water in the microwave. It is good for it to go up to two cups, but one cup works.
Measuring spoons should be metal and on a ring. You should have one tablespoon, one teaspoon, one half teaspoon, and one fourth of a teaspoon. A half tablespoon and an eighth teaspoon are nice, but not necessary.
By no should you need have measuring spoons for a dash and a pinch. You just dash the salt shaker and pinch a bit of sugar between your fingers. These measurements are not meant to be exact. And what is a smidgen? I don't believe that very many people know what that is, let alone measure with it. Now that I'm saying that, it occurs to me that it is probably a measurement used commonly in England. But I am American, so I don't know. I apologize if I have offended anyone.