ideas?

So I was trying to figure out a way to actuall;y do this video, and my first idea was that I would really like to interview just everwhere... people on campus, in the streets, wherever- seeing how often they (use/though) they used their cell phones, and mainly for why, but then I got a better idea:
Record people doing things the "old way": payphones, landlines (with the cord still attached, perhaps?), handwritten letters, painting a the scene in front of them (instead of using a camera, or maybe using an old camera as opposed to digital), then record them doing things the new way, and perhaps show the progression from handwritten letters, to type writers, to printers to email, to texting; the progression of even the telegraph to the telephone, to the cell phone.... to the computer (ie podcasts, this video).
I don't know, but i think it could be pretty basic to do, but a really interesting way to do it, and I know something I could enjoy/appreciate/relate to/learn from when watching. Or maybe I'm getting ahead of myself but the basic idea, hah. We'll see, i guess.