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