child's play, fripperies, nonproblems, picayunes, shucks, small beer, small change, trifles, trivialities

naught(also nought), smoke, zeros(also zeroes)peanuts, pittances, songs, straw, two bitsbunk, claptrap, drivel, follies, fribbles, fudges, hogwashes, humbug, humbuggeries, nonsense, rot, trash, triviabits, crumbs, dabs, drams, licks, mites, ounces, particles, pinheads, scintillas, shreds, smidgens(also smidgeons or smidgins or smidges), soupçons, specks, spots, touches, traces