as was said, the best way to store bitcoin is on paper.
please make sure you secure your bitcoins saving this way
https://www.bitaddress.org/ <- BTC paper wallet generator
http://liteaddress.org/ <- LTC paper wallet generator
please use the following steps
go to the website click "save page as" in your browser's file menu
save the html page to a usb device
remove the internet wire to your computer
re-boot your computer with a live linux CD
plug in your usb and load the html page you saved
generate your paper wallet and print it out
then send the bitcons or litecoins to the paper wallets
DONE!
this is the paranoid way to create secure paper wallets.
I recommend booting with a live linux CD because this way their is
0 chance some malware or keylogger could see & steal the paper wallets you generate
if you don't know how to burn a Live Linux ISO on a CD and then boot from that...
unplug your internet, generate your paper wallets, print, and then reboot b4 for connecting to the net again. ( this is probably sufficient )
there are many options to securing your coins, this is the way i do it...
barin wallet is another very secure way. ( if done properly, with a strong password )
also see
http://www.piperwallet.com/ for a supper easy way to create paper wallets.