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.
bubal bubale bauble bubble bubbly babel babul bible babble babool bobble
bubal tubal bal doubly cabbala tibial double ruble rouble pibal labial qabala kabbala kabala bubale cabala sabal bauble bawl ball bale bail baal lowball robalo rubel cabal
bub baubee boubou bubba bubby bubo bubu rubaboo