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.
miggs migs muggs megs muggees mugs mogs mics moggies mags magus micas mikes micks megass maquis magueys megasse mickeys mix macs maxi mocs mycs
iggs miggs hoggs gigas gigs jaggs jigs gags noggs migs raggs cigs zigs digs teggs wigs vuggs haggis vigs vigas figs eggs biogs bigs quaggas bigos muggs pigs rigs saigas daggas taigas whigs yeggs
migg mig moggie moggy mugg muggee muggy amiga amigo