Plastic or cardboard boxes with bright pictures make a great toy. Find realistic pictures (or photos) to stick in, as babies struggle to distinguish between a real tree and picture of one, for instance. A good plan is to make a little book of her world, with pictures of the people she knows, her bed or bottle, dummy or teddy.
Toys that appear and disappear, like pop-up toys. Bells and rattles. Stacking blocks with different textures. Balls of varying sizes. Scented bubble bath, bath crayons, coloured foam and shaving foam.
A wagon on wheels with blocks on it that she can push around. Bubbles to blow. Sandpit with play sand. Drum or xylophone. Hand or finger puppets. Interesting household objects. Keys. Clothes pegs. Spoons (wood and metal, big and small). Pots, muffin pans. Cookie cutters. Straws. Oven cloths. Any paper that makes a noise (like cellophane).