Very small crossbody purse?

I have seen these out there...I know they exist, but I can't find where to buy one. I want a teensy tiny purse with a long strap I can wear over my shoulder and across my chest for when I go places that I don't want to keep up with a purse, but need those few essential items. I have seen small crossbody style purses, but they're are not like I want and are usually still too big. The ones I've seen and want are very VERY small. You can literally fit your cell phone, keys, a credit card or some cash and maybe a lipgloss, but nothing else. So like 6" X 6" or even smaller, like a wristlet. The ones I've seen are made of cloth, not leather, They are usually colorful and bohemian looking. Basically, when you have this on your shoulder you would barely notice it's there. I am in the North Dallas, Texas area. I have looked in Target, Walmart, JCPenney, Sears, Sam Moon, Claires, The Icing, Burlington Coat Factory, Old Navy...Thanks in advance!