Picnics rhymes with:
comptronix, micronics, bolsheviks, broomsticks, candlesticks, celtics', chopsticks, comptronix, crucifix, cyrix, kubrick's, lipsticks, lunatics, marwick's, micronics, nightsticks, politics, politics', shandwick's, toothpicks, topix, upticks, warwick's, yardsticks
Picnics sounds like:
pachinko, pacing, packaging, packing, packinghouse, paging, pajamas, pasing, passanisi, passing, passions, pausing, peaking, pecanins, pecanins', pecans, pecking, peeking, pegging, peking, pezim's, phasing, physician's, physicians, physicians', picinich, pickens, pickens', pickens's, picking, pickings, pickins, picnic, piecing, pieczynski, pigeon's, pigeons, pigskins, pipkins, poaching, poconos, poignancy, poisoning, poisonings, poisonous, poisons, poking, posing, posnick, possessing, possessions, possums, poznanski, pozniak, psencik, psychogenic, psychokinesis, pugnacious, pushing, pygmies