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.
tens teens tense teensy tenuis tennis tenias tenues tins dens tons tuns tans tennies taenias tenuous tonus tansy tines towns denes tynes dense toons deans tunas tones tains tunes dienes denies tenace tauons tineas tonnes tawneys townies tannoys tunnies toonies tawnies dueness duennas townees dins dans dons tonneaus duns downs dunes dynes dawns dines dinos donas donsy
bens kens sheens wheens weens teens wrens fens hyphens hens gens keens ens lens queens liens hymens miens peens pens rouens dens tens wens whens yens