Cloth, and to protect the screen, a screen protector of both screens(although it can be annoying to put on correctly) For added paranoia protection, cover the
DS with an all around
DS case and/or keep it in a case for whenever your not using it. Also, keep a game in both slots, use the protector, so this way your
ds doesnt get busted from dust entering constantly. For more Paranoid, read the
DS Manuel. You should not use Paranoid if you are not paranoid, lazy, have very short attention span. Ask your doctor before using. Paranoid may not be for people who are rich, don't care and/or like eating metal.