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.
mag mac mug mig meg maguey mog mako migg mica mega mack mugg make macaw maqui moggy muggy moggie muggee