I stumbled across this one back in my early teen years, during a period when I'd put my penis on anything to see if it felt good, and sometimes I'd try things two or three times just to make sure I hadn't missed anything the first time. In this case, all you need is a mid-size plastic bag of cotton balls, like what you can get at just about any drug store. Put a hole in one end, insert your penis, hold the bag with one or both hands, and go to town. The sensation is surprisingly soft and warm and enjoyable.

Not wanting to make a mess of an entire bag at once, as a kid I tried all kinds of tricks to rig up something similar but in a smaller container, with less than fantastic results. A handful of cotton balls in a sandwich baggie might work. Particularly unsuccessful were my attempts to rig a fake vagina out of cotton balls and toilet paper. It just wouldn't hold together very well. I can't even imagine how my life might have been transformed if someone had bought me a Pocket Pussy back then.