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.
bucko buck back beck bock boocoo bookoo bog bug bake beak bike biog book
bucko cuckoo yuck shacko chuck wacko ducky sucky socko ruck puck fuck huck gecko jocko juco buck guck sicko shuck chucky whacko tuck duck suck pucka guaco mucky muck lucky luck quick quack yucky