Your companion bird is a smart creature, and will be much happier if s/he has some birdtoys to play with. Toys come in a wide variety of types, colors and sizes.
Unlike most animals, birds can see colors just like we can. Colors are important for distinguishing their own species. Therefore, you should purchase toys with bright colors...red, green, blue and yellow.
Birdtoys with mirrors are also very popular. Pet birds will spend great amounts of time looking at that other bird in the mirror -- pecking, preening and just showing off.