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