In Cameron's recent blog post about getting comfy with new tech by using your phone for payments and tickets, he mentions that Rick has a tip/trick to save the trouble of scrolling through older email messages to find the QR code in the message the seller sent you -- just take a photo of the QR code and save it with your photos (or file it as you see fit).
I want to caution you that concert venues have already put measures in place to prevent people from copying virtual tickets in this manner and attempting to use the same ticket more than once -- the QR code or similar that they send you is actually an animation that has security measures, such that taking a screenshot of it or a photo of the screen from another phone will not work. This isn't in use everywhere, ~yet~, of course, but give businesses a little while to catch up with scammers and it will become common.
I've also noticed that if I attempt to copy the whole message from the seller including the ticket and paste it into a calendar entry, the ticket part will not paste, so that doesn't work either.
So, what are workable ways of organizing your pre-purchased tickets on your phone?