Book collecting is a niche hobby that spans the global middle class to the ultra wealthy (as opposed to baseball cards which are mostly an American thing). A rare book is easy to hide, easy to move, unrecognizable to most and quite liquid.

In October, someone dropped a box of books on the sidewalk in front of a library that was closed during Covid (along with its outdoor book drop which was locked). Many people had already rummaged through it by the time I got there with my 5 month old strapped to my chest. I came away with an autographed first edition, first printing of the intelligent investor. Hidden in plane sight.