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.
daks dawks dags degas decks dagos tacks docks dukes dicks dykes dekes takas ducks dikes takes teaks dekkos decays daggas dagoes degauss duckies dickies dickeys docs digs dogs dugs tags decos tacos ticks tikes tikis togas tokes tucks tykes
beaks kaiaks leaks oaks peaks wreaks soaks daks teaks yaks