My Velocast-style pick of the week is “Old T-Shirts”.
Old T-Shirts are essential for bike maintenance. They can be used to clean and polish lightly dirtied bike parts, with or without soapy water. After that they can be used for the thick mucky crud that ruins an old toothbrush or a proper bike cleaning brush in an instant. Slipping an edge in between the cogs and pulling it back and forth is a good way to get dirt out of those hard-to-reach areas.
Furthermore, this helps me to weed out the T-shirts in my wardrobe that just refuse to die.