Merlin MannThe Instacart logo is an arrow pointing to a map location marker.
Which visually implies a carrot.
This is extremely clever to me.
Matthew Haughey@hotdogsladies I was today years old when I learned this
Dan Morgan 
@mathowie @hotdogsladies There’s somebody born everyday that has not seen the FedEx arrow.
Staples. It the place where you get the staples for you business, like paper, pens, and even… staples.
Nearly daily I encounter obvious references that I’ve missed for years. And I’m supposed to be a graphic designer!