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.
lamby lamb loamy limby lam lambie lama loam lame limy limb limbo limbi limba lamia limey llama lamiae lum lima lime limo loom luma ylem
lamby jammy samba mammy mambo loamy goombay jamb gamey gammy gambe gamba gamb gamay womby tomboy shammy seamy jambe beamy gamy tammy sambo rammy mamey mamba lamb limby ambo embay foamy hammy iamb iambi chammy whammy shamoy