I was having a conversation with my kids where I mentioned the Sony Walkman. They, of course, had never heard of a walkman. This was the perfect chance for me to break out "when I was a kid".
It made we wish I had a picture of all my cassette tapes in there slotted case but who would think to take a photo of something so common back in 1988. I got to thinking about what is common today but might not be in 25 years. Is it books? We have two IKEA bookshelves side by side. Each has five shelves and they are all as full as the two I have pictured but all of this information could fit on a kindle that is smaller than most of the books and have room for more.