If you haven't seen the Flickr archives of Jason Liebig, check them out when you're feeling nostalgic and have a few hours to spare. He has one of the most, if not the most extensive collection of vintage packaging, and the majority of the collection is from the '70s and '80s. I have never met Jason in person, but he bought some of the items in his collection from me back when I was a regular seller on eBay, including a set of 1970s coupons. Hard for me to let go of, but I knew they'd be going to a great new home.
Here is some festive vintage firecracker packaging from Jason's collection to help celebrate 4th of July.