This is a quick, fun assignment that works great to assign for homework in a general business or a marketing class when you're working on product design & development.
Students get to pick a product from those listed and do some research into why that product failed. My students really enjoy this assignment. The discussion about the products the next day is generally pretty lively and fun.
There is one risqué product, see the included brief descriptions of the failed products I included, you could remove that one and replace it with an example you feel is more appropriate, but I teach my class to mostly juniors and seniors and they seem to be able to handle it.