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.
bamboo bimbo bam beam bomb boom beamy bombe boomy bum
bamboo moo ambo bimbo boom embow jumbo combo gombo gumbo limbo mambo sambo dumbo tomboy umbo
baba babe baboo babu baby baubee bawbee