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.
ricin raisin raisiny resin risen rosin resign resiny rosiny rusine raisonne reassign
ficin ricin seizin raisin piscine piscina oscine niacin mucin leucine leucin phocine fascine acini scion cion cine seisin hyoscine