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.
plunk plunky plink plank plonk poling puling piling paling polling palling pooling pealing pleonic pilling peeling pulling pollinic
flunk clunk slunk lunk plunk plank slung lung slank flung plunky clank blank plonk blink link clonk clung clunky flunky flank plink relink clink slink lank