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.
dato datto daut dawt doat date dado data ditto tattoo dautie dawtie tod dot tot tat dad dit tatouay toed doty duet toot toad duad tote dite diet dita duit tate dada toit duty tody deet dodo tout dido doit teat dead dote taut ditty dowdy daddy tatty dotty deity today toddy toady doody diode