Cost of the actual computer is not the problem. All of these $50, $20, $5 computers conveniently ignore that fact that you also need $150+ for a monitor, USB hub, keyboard, mouse, WiFi adapter, etc. This quickly raises the price from "something a low-income family can easily spend on a child" to "no fucking way." I found OLPC a lot more compelling.
Still, I'm thankful for cheap hardware on which to run pirate AirPlay targets and homebrew IP cameras :).
Chip has an answer to that.[1] Not sure whether it is really usable enough for kids to work on, but I'd did a lot of work on my TI calculator, which didn't even have a qwerty keyboard.
I follow the logic here, and intuitively agree, but anecdotally it was almost the exact opposite experience that started my interest in computers.
We got a computer mainly to help with personal accounting type things. Beyond what my mother knew of Excel, my parents were not at all technically savvy. Probably because of this (that is, that they didn't know how to restrict/follow what I was messing with) they gave me relatively free reign to tinker on our family computer from the age of about 8 on. After a few years I just fell into the de facto IT of the house.
I wonder if the problem now is that computers are used for so much more by adults? As long as I could fix/hide whatever I broke before my parents needed to update their budget or check their email, hardly even a daily ritual at the time, I was in the clear.
The tech stall in my local market was selling a 17" TFT that had DVI for £15 the other day (about $22.50), mice, keyboards etc are a few pounds, You could get everything you needed for about the price of the RPI if you shopped around for it.
I was tempted by the TFT, removed from it's case and built into something it would have been a useful thing.
A $9 C.H.I.P. (virtually un-google-able name, btw, absolutely terrible for noobs) comes with a standard RCA video cable. It has built-in WiFi and 4GB of NAND storage.
You need peripherals. Using USB stuff means you'll need a powered USB adapter (<$10 on Amazon). You can also use bluetooth. I like the bluetooth keyboards with a built-in trackpad. That's $20 and great for ease of use and flexibility. You can pop the chip on an empty video input (because most other devices are using HDMI) and just keep the keyboard on the coffee table. No cables, no mess.
You'll need a USB power supply for the device itself. I find it hard to believe that most people can't scrounge one up from an old smartphone, or is able to find one at Goodwill, but let's call that $10.
For monitor, used is definitely the way to go. CRT displays are practically free, as well as older liquid crystals. If you really need a new device, you can definitely spend less than $50 as the resolution of the device is still going to be the limiting factor.
So, with shipping for the CHIP, that's $35 for the average person that does have a USB power supply and junky TV.
I'd say it's videogames. I got into programming through glitching games, then scripting games, then programming games. I know a lot of other people my age (mid-20s) who had similar experiences.
Look at kids making various contraptions in Minecraft -- and look at how many of them go into the modding scene.
I don't think that tinkering experience has been lost; people just forget what a small fraction of the population was interested in this stuff in the first place.
Tools change, but interested kids still find a way to tinker.
More to this point, my first tinkering was on an outdated, free, hand-me-down 286 from a neighbor. It was enough, though, to probably set in motion what has become the majority of my income later in life by working in computers throughout the years