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.
spuing siping sopping supping souping spaeing soaping sipping seeping sapping spang spunk spunky spunkie zapping zipping spank
spuing pooing chopping pipping napping lopping whipping hooping oping hypoing topping popping leaping gypping dipping ping hopping capping sopping mopping raping pingo peeing piing gaping reaping couping hyping mapping wiping yawping shipping cheeping whopping whapping typing tipping duping zipping spaeing sipping yapping coping jauping wapping taping supping seeping pieing riping gawping roping quipping wrapping kepping pepping aping dapping rapping cupping fopping heaping beeping pupping moping soaping jeeping hoping bopping gipping lipping lapping pooping toping pung nipping hipping wheeping loping knapping piping chipping copping louping peeping japing keeping rouping kipping ripping gapping repping happing sapping looping dupping upping cooping whupping shopping siping souping zapping doping tapping tupping weeping whooping chapping shaping yauping yipping
spin spine spinney spinny spiny spun supine