Many small dog costumes begin with a dog- or toddler-sized T-shirt. Dress a superhero with a toddler-sized super hero T-shirt and a cape. If a cape isn't readily available, make one from a second small T-shirt. Make a spider costume, or nearly any other insect costume, by attaching legs made of rolled paper or wire to a small decorated T-shirt. Turn a small dog into a Chia Pet for a night by gluing artificial plants to a small T-shirt.
Dress your small dog as an Ewok from Star Wars with a brown fabric hood secured with twine. Make a ghost costume by cutting eye and muzzle holes into a pillow case.
Create a Lego costume with a dog-sized box, tuna cans and paint. Cut one short end off a rectangular box to allow the box to sit on the dog's back. Glue six tuna cans to the top of the box to resemble a Lego brick. Paint the entire costume red, blue, green or yellow. Attach the costume by threading ribbon through holes in the box and tying it under the dog's belly.Learn more about Dogs