Ivy-leaf geranium (Pelargonium peltatum), spider plant (Chlorophytum comosum), milkwort (Polygala myrtifolia), vomitwort (Lobelia), ivy with small leaves (Hedera helix), fuchsia and petunia are good for hanging baskets.
Italian bellflowers, fuchsias, geraniums, million bells, lobelia, these are all cascading and trailing plants. Never put an upright plant in a hanging basket as you you will see are stems.