What kind of gingersnap cookies should I buy? The little, super hard ones?

I'm so in the mood for gingersnap cookies now..crumbled over vanilla bean ice cream.

Here is a recipe for GF gingersnaps you can easily make yourself: https://food52.com/recipes/12594-g-f-g-s

World Market has those good Swedish ones this time of year that would work - um, Nyanacker or something??

That's what I would buy! (Actually, I'd buy Trader Joe's Triple Ginger ones, with little bits of crystallized ginger. They are fairly hard.) ;o)