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.
diddleys diddles diddlies daddles dawdles doodles toddles deedless tideless titles details dottles tittles dateless toadless
medleys diddleys ridleys riddles ediles foodless doodles doyleys huddles paddles buddles roadless weedless muddles modules needless ladles boodles lidless caudles chadless raddles toddles peddles budless headless poodles heedless widdles aediles fiddles ruddles seedless daddles deedless odyles nodules beadles aidless padles rodless fuddles meddles noodles leadless diddles noddles addles coddles audiles deles cuddles godless piddles middles oodles waddles motleys toadless diddlies dawdles sidles saddles bedless needles dales idles reddles hoodless puddles heddles wheedles woodless doles yodles
diddle diddley diddly daddle tiddly