Put a live USB for Linux Ubuntu LTS 12.04 on a bootable 4Gb micro SD card and you’ll realize it’s not impossible.
<need make bootable and loader links>
In fact I’m using it right now. And I bought the card (4Gb with SD card adapter for $5) just weeks ago.
O.K, it’s not a whole computer, is a whole operating system and saved files , but as soon as you find PC with with a flash card adapter or a USB port, you’ll quickly be able to have your familiar environment and files on screen.
You can get all the software for free, you may need to hunt down someone a little computer savvy to help you set it up.
Once set up, it is a small as you are going to get your files, and it contains a system to view and alter them, connect to the Internet, the whole thing.
To use this you will possibly need to alter the host PC BIOS to accept boot from USB and probably press a key on restart to enable this to happen*.
*guide coming soon
You could of course use a USB stick but its not quite as compact. The extremely small size of the micro SD give its the ability to be hidden if necessary. Something that small can be hidden in so many places the mind boggles, even more so for a person trying to find it.
If you find yourself in a an emergency or sudden collapse scenario, you can take all of your important data with you as a very small item and very fast. Any one searching your computer would not be aware for quite some time that you took this essential component with you. leaving behind a computer with a copy of windows or apple OS with nothing particularly interesting/identifying/incriminating on it. It can really change the game.
You may be traveling for a long time in a sudden collapse scenario and the ability to periodically access a computer and have everything you want on it ( exactly the way you left it last) would be very useful.
Imagine you have been on the road for a week and find an abandoned house.In the house there is a desktop computer with the side of the case missing,clearly the hard drives are missing. The house still has some power from whats left of a solar PV and inverter setup. They left in a hurry, and as it is, the PC wont work .Those plants you saw 2 kilometers back, are they edible? Load up your tiny fingernail computer and compare them to the edible plants data you have. Are there any WI-fi signals here? What dose my map tell me? All these things become possible with this tiny investment you made when you saw a post on the Internet about a $5 fingernail sized computer.
Cost $5 or less, might save your life.