Useless Inventions

http://www.flickzzz.com/2007/10/stupid-inventions.html – a photo collection of stupid inventions
http://list25.com/25-most-useless-inventions-ever/

http://www.hemmy.net/2006/04/27/useless-japanese-inventions/

http://news.bbc.co.uk/2/hi/science/nature/4318888.stm — an article about IgNobel prize and its winners