Sparkling rhymes with:
buckling, chronicling, chuckling, conkling, crackling, duckling, fickling, heckling, hickling, inkling, mechling, pickling, rankling, sprinkling, strickling, suckling, swashbuckling, tackling, trickling, weakling
buckling, chronicling, chuckling, conkling, crackling, duckling, fickling, heckling, hickling, inkling, mechling, pickling, rankling, sprinkling, strickling, suckling, swashbuckling, tackling, trickling, weakling