I’ve been doing this for the last couple of years. I don’t keep every can I drink but I have now built up a worryingly large collection of boxes stacked up containing empty cans and bottles.
Some breweries have some incredibly talented artists doing their labels and I think many of them look great and I’d love to display them somehow… someday. My problem is I have no idea what I want to do with them! I’m also too lazy to spend time peeling the labels off carefully without tearing them - if I could get that done I could save a hell of a lot of space in my house.
Things I’ve seen other people do with labels: decorate their fridge door, their inside wardrobe door, their “mancave”/shed/garage/home bar, plant pots (cut the lid off the can, leaving the label as is), and finally in some cases actually framing the labels as if they were a photo or painting.