Everyone knows Legos™; I always loved them, but when I was growing up, they were too expensive for my parents to afford more than a little "sample" kit once in a while.
So I found this Lego™ kit somewhere in my building; people are always discarding old books, clothes, and toys in the lobby of my building—thinking "Someone will want them." (Someone left a toaster oven on the radiator, and boy was that a mess when the heat came on and the casing started to melt.) I took it upstairs, inveterate hoarder that I am, thinking, "Who am I kidding?"
They came in handy after all.