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.
helleri heller hellery holler huller hiller healer heeler hillier haler haleru hauler holier howler hailer haulier hilar hollowware
helleri fuller hiller knoller raillery poller roller luller millier queller sillier seller dialler culler duller gallery giller taller caller teller holler toller hillier woollier huller chillier hellery shellier heller fullery fueller killer filler faller pallier rallier puller sallier miller muller loller dallier siller dueller galleria baller tailleur jollier tallier collier tiller biller willer bullier chiller iller sheller feller yeller