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.
yelks yolks
elks whelks yelks leaks talks bilks sleeks polkas kulaks caulks gleeks leeks ilks leks balks baulks bleaks flecks folks belleeks taluks beyliks folksy chalks tilaks bulks walks sulks holks silks milks kliks cleeks calks hulks yolks