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.
haulmy haulm halm halma helm holm hilum helium
haulmy qualm slimy plumy plummy palmy malmy qualmy culm limy haulm flamy filmy elmy blimy balmy slummy
haul hallow ahull hulloa hullo hull hula heal haole halo halloo hail halloa hallo hallah hall hale hulloo dhal