Print out the ones you like and put them in an album or on the wall. Think how many photos you have that are like that in a family and still around, when all the rest are gone on dead phones or computers somewhere.
You can't get a perfect digital copy of a printed out photo. You're subjecting yourself to generational losses for no good reason.
If you're a fan of paper, you could base64 encode the digital photo and print that out onto paper with a small font, or store the digital data in several QR codes. You can include a small preview too. But a couple hard drives or microSD cards will hold many millions of times as many photos in less physical space.
Doing paper backups is hard I could not store much data on paper when I last tried with QR codes. You need to to multiple QR codes since they are only 2KB each. There are some threads about it on HN, but I have never seen anyone do megabytes per paper
Photo prints will yellow over time, a lot. You have to choose paper and storage environment carefully if you want them to last.
Hard drives are probably better than paper as long as the power grid is powered and there are still computers with the right kinds of ports to read them.
