Someone else did some digging:<p><a href="http:&#x2F;&#x2F;www.ourhappy.space&#x2F;2015&#x2F;05&#x2F;25&#x2F;count&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.ourhappy.space&#x2F;2015&#x2F;05&#x2F;25&#x2F;count&#x2F;</a><p>tl;dr - The figure seems to come from Regina Lark, a &quot;Professional Organizer&quot; who &quot;specializes in working with people with chronic disorganization, ADHD, and hoarding disorders, as well as folks who have way too much stuff,&quot; although she suggests 30,000-300,000 items. I still think 30,000 is way off, however. I&#x27;d struggle to get to 3,000.