Most people don't actually realise that the tulip bubble wasn't really a bubble. It was actually a reallocation of contracts, it was made from a contract to a "swaption," by changing the contract to a swaption effectively, and by allowing government officials to get out of a contract they collapsed the price.
Now tulips did actually have a use back then. Tulips kill grass and one of the things they would have done was plant them around castles to keep the grass down and trees down, because they're toxic. If you had a castle back then you wanted a large area to see things. There was actually quite a value in tulips because, they sold billions of them around Europe. ... The volumes were huge. The audience was huge, it was bigger than coffee is now.