![DIY Shark Week Cat Costume 2](https://lovepetsdiy.com/wp-content/uploads/2013/12/DIY-Shark-Week-Cat-Costume-2.jpg)
Here are the things you will need:
- fabric glue
- a piece of grey felt (those printer paper sized ones you can find anywhere work!)
- thin elastic
- cardboard from a cereal box or something similar
- sewing machine or needle & thread
- pins
- paper to draw shark fin on
Source: http://www.instructables.com/id/shark-week-cat-costume/?ALLSTEPS