Well, the first item to be sold after being scanned by UPC barcode was a pack of Wrigley's Juicy Fruit gum. The sale happened on June 26, 1974 at a Marsh Supermarket in Troy, OH. It's on display at the Smithsonian Museum in Washington. I'm pretty sure that the pack of gum wasn't the first item to actually have a barcode affixed to it, tho, as barcodes were being used on railroad cars since the mid-1960's as a result of a patent given to a couple of researchers at Sylvania. More than likely they used the barcode on more than a few items while doing their research, too.
As for the bees and the flowers, I have no idea.
And I think the longest definition in the dictionary is for the word "set".