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.
gawky gawk caky gowk cakey gooky quaky quacky gag cake coky gaga gook guck kaka kaki
pawky gawky whacky tacky peaky oaky leaky laky quaky quacky caky gawk cakey jacky hawkey hawk fakey beaky dawk wacky shaky
gawk gawky hawk hawkey hawkie gowk pawky dawk