I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
pionic pianic panic hypnic pinkie panicky pong pink ping pinko piing pingo pinky hyping peeing pieing pinkey pooing hypoing
bionic pionic tonic ionic kaonic yonic sonic conic phonic aeonic muonic hyphenic hyenic genic tunica hypnic cynic pianic xenic quinic manioc maniac manic panic snick hygienic vinic tannic hyaenic scenic runic nick tunic
pion pin spiny spinney spin epinaoi pony pain pein peon peony pian piano pine pina piney pinna pinnae pinny piny pone poon opine spine spinny upon