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.
babus babes bubus babas babies baboos bibs boubous bobs baubees bubs bawbees babassu boobs bibbs bubbas buboes beebees bobbies boobies booboos bubbies booboisie
babus habus tabus abs bus jabs abuse gabs abas labs beaus busy buys nabes abos rebus rubus sabs dabs tabes nabs buss boubous fabs nabis gibbous cabs bubs kabs bubus mabes phoebus abys babas niobous babes rebuys sabes zebus daubs tabs wabs
babu baba babe baboo baby baubee bawbee baobab