rainbows

agglomerates, agglomerations, alphabet soups, assortments, botches, clutters, collages, crazy quilts, farragoes, gallimaufries, grab bags, gumbos, hashes, hodgepodges, hotchpotches, jambalayas, jumbles, jungles, litters, macédoines, medleys, mélanges, menageries, miscellanea, miscellanies, mishmashes, mixed bags, montages, motleys, muddles, olios, olla podridas (also ollas podridas), omnium-gatherums, pastiches, patchwork quilts, patchworks, potpourris, ragbags, ragouts, rummages, salads, salmagundis, scrambles, shuffles, smorgasbords, stews, tumbles, varieties, welters

mosaics, tapestries

detritus, notions, oddments, odds and ends, sundries

accumulations, aggregates, aggregations, conglomerates, conglomerations

catchalls

admixtures, alloys, amalgams, blends, combinations, commixtures, composites, compounds, fusions, intermixtures, mix-ups

bollixes, chaoses, confusions, disarrangements, disarrays, disorders, dog's breakfasts [chiefly British], messes, morasses, shambles

imbroglios, knots, snarls, tangles