White Orchid - Phalaenopsis grandiflorum
This orchid makes a great gift that will carry on flowering for ages. Its two stems are laden with buds and flowers, and between them will produce at least 12 buds or flowers. The flowers are subtly elegant, and being white, will fit into most settings effortlessly.
Keep the compost moist during the warmer months, but in winter you should reduce the amount it gets, and only water them occasionally.
Ideally when watering, you should let them stand in a tray of water (or kitchen sink) so they can soak up as much as they like for an hour or two. Afterwards, let the excess water drain away completely. It is always best to give them a good soak when they get quite dry, rather than watering little and often. Their preference is for soft, tepid water.
They love humidity, so a bright kitchen or bathroom would be ideal, and mist the leaves with water occasionally, especially if they are in a heated room.