Take a scroll through the packaging and wrappery of the early 20th century at the American Package Museum, courtesy of curator Ian House.  
 
See for yourself how Dr. Pepper, Milky Ways, Wilson tennis balls, and dozens of others were packaged in days of yore. There are even -- are you sitting down for this? -- 3D models of several of the bags, bottles, and cans within.  
 
Oh, and there's a gift shop, too. What self-respecting museum would be complete without that?