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.
lychees lyches lichees laches liches leches latches leaches leeches letches loaches lochs laichs lashes lichis lushes leashes litchis
bouchees lychees vouchees lichees hotches roaches cooches vichies etches pooches mooches niches wyches aches muches cutches teaches fitchews hootches rushees cheesy lyches rechews loaches matches patches fiches wiches vetches duchies seiches rouches retches ratches pitches notches aitches vouches touches quiches catches naches laches itches leaches leeches hitches chews fitches eches douches ketches hoochies cheese miches gouaches reechoes hutches baches wretches nautches caches techies mutches hatches couches boches nitchies maches coaches beeches batches chess liches peaches bitches botches rotches duchess letches leches latches quitches quaiches hooches butches pouches beaches watches fetches echoes mouches ouches poaches reaches riches ruches ditches taches witches