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.
campi camp campo campy comp gamp compo kemp
campi amp champ tamp damp samp ramp pampa lamp gamp campy campo camp impi hempie vampy vamp tempi champy
cam cambia came cameo cammie camo scam