Good night, Cubao!

Of all the four elements, Air has the most number of playthings:

Flags
Banners

Windsocks
Kites

Toy windmills
Bubble machines

Paper planes

Joss sticks/Incense

Balloons

Confetti

Wind chimes

Bells

Bird cages

Singing bowls

Prayer wheels

Earth:

Hourglasses

Kaleidoscopes

Magnets

Sandboxes

Sand castles

Dollhouses/Dolls

Stuffed toys

Marbles

Clay/Plasticine

Bonsai/Dish gardens

Origami

Water:

Aquariums

Toy boats

Lifesavers

Rubber rafts

Rubber pools

Rubber duckies

Snorkels

Fire:

Pyrotechnics

Candles

Lanterns