DIY Macro lens for photographers on a really tight budget

If you are really on a tight budget, like a Pringles-can budget for a macro lens, don't worry. PhotoCritic.org editor has found a really cheap way to create a DIY macro lens by using a fixed lens, body cap and a Pringles can. I don't know if this is the most recommended way to use a macro lens, but it is cheap, very cheap. It won't teach you how to create lens from nothing, but use your current