Linux can now be placed on a USB Thumb Drive. You can have an entire distribution on a thumb drive. That way you can carry it with you where ever you go.
I mean you can take a full DVD distribution of Linux and place it on your Thumb drive.
Once you have this on a thumb drive you will be able to add files, play games, surf the internet, create a spreadsheet, or a word document. Put it on your thumb drive and then take it with you.
That means that you will never need to be pinned down to a computer or carry your laptop with you again. Just have thumb drive will compute.