Orchids and other lovely plants that don’t need a lot of attention

I have quite a few of these in pots round the garden. I like them because they thrive on total and utter neglect and faithfully flower every year. They must like it in our back yard. Are there any other plants like this ? The showier the better - I like bright and in your face flowers ! We have a climate that ranges from very low ( just above freezing) to very,very high ( 40C plus) and tends towards dryness.