Phormiums are very good, also agave and astelia … good for spiky shapes. Pieris does well in a pot as does juniper and Japanese maple. Hosta is excellent but withers back. Agapanthus is good, especially evergreen kinds. Ivy is good for trailing and evergreen.
Then ring the changes with spring bulbs and spring bedding plants, and in summer, plenty of summer bedding … ivy-leaved geraniums, verbena, or petunias.