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.
duds duads dudes dads dadas dados dodos didos deeds deads duets duits dauts diodes didoes duties dadoes dodoes didies duteous dauties daddies doodoos teddies dowdies tedious doodies toddies tads dits tods tuts dots teds ditas toads tauts ditsy dawts datos dotes dites doats deets dates doits tides diets touts tutus
bauds buds feuds fuds cuds gauds lauds leuds mauds muds ouds puds suds duds yauds