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.
ambeer amber ameer ambery aimer ambry ambari ambary amir amour
ambeer amber wombier timbery teemer somber omber member ambery ameer bomber ember emeer camber comber cumber gambier lamber lambier limber limbier lumber number seemer dumber timber umber chamber