Below are 7 words, picked randomly out of a pool of 4270. In theory, that's 84 bits of entropy (if you trust your browser's prng).
phrase:
Applyscrypt(phrase, no salt, 16384, 8, 1, 32)and you get:
private key:
bitcoin address:
To recreate your key/address pair from an existing phrase, type it here. Warning: this is just a proof-of-concept implementation. Don't use this for anything involving real money unless you really know what you're doing.