Not only does this give that gross old cushion a new-looking and personalized touch, but it will also help to trap in mold, dust and other nasty allergens.
Takes about 10 minutes.
Step 1: Get a big shirt
Make sure it's big enough to cover the front of your cushion.
Step 3: Bag it
People will allergies will thank you.
(By the way, if you have dust allergies, you should get rid of your carpet NOW. You should get rid of your carpet anyway because it's made of toxic chemicals that off-gas for the whole lifespan of the carpet.)
Step 5: Go vegan
Step 6: Staple the T-shirt to the cushion
Turn the cushion around and staple the shirt to the back.
If your shirt has a picture like this one, make sure you remember which direction the image is facing. As you will see, I have attached the shirt backwards.