I really think it is time to get one of these:
Actually I think this is a relatively light year as far as walnuts go (it does vary according to atmospheric conditions or whim of the Walnut Gods), but still. Last year it was like a carpet.
(By the way, in my can't-help-noticing-typos way: the list of things you can pick up includes "liquid amber seed balls," which I think is autocorrect for "liquidambar" or sweetgum. We have those too, but they're out in the Way Back where we don't step on them all the time. Having the walnuts around is just asking for sprained ankles.)