Maven's rhymes with:
mavens, craven's, cravens, havens, mavens, ravens, sarajevan's, sarajevans, slavens, avon's, beethoven's, bevans, bevens, bivens, blevens, calvin's, craven's, cravens, devens, divens, donovan's, donvan's, eleven's, elevens, enlivens, evans, evans', evens, givens, havens, heaven's, heavens, hillhaven's, ivens, leavens, levens, mavens, nivens, nonwovens, ovens, ravens, sarajevan's, sarajevans, scrivens, seven's, sevens, slavens, stephen's, stephens, steven's, stevens, stevens', sullivan's, sullivans
Maven's sounds like:
mapping, mavens, mbank, minivans, monophonic, moonbeams, moping, mopping, moving, muffins, mummifying