Sunbeam rhymes with:
moonbeam, longerbeam, moonbeam, stufflebeam, academe, bireme, bloodstream, daydream, episteme, gulfstream, ice-cream, jetstream, knieriem, longerbeam, mainstream, midstream, moonbeam, nauseam, sidestream, starstream, stufflebeam, woodstream
Sunbeam sounds like:
sampan, schoenbaum, shampine, shimbun, shinbein, shinbone, sinfonia, sniffen, symbion, symphony