You put off getting a costume until now. The costume store is completely unoriginal. In retrospect, Playing video games until an hour before the time of costume need was not such a good idea. Here is an awesome project idea for those with little time or supplies. Blah blah blah... lets get started!
a beverage holder
red fleece pajama pants(cheap at target)
construction paper(red, white, and black)
hot glue gun(turn it on before you start)
Step 1: Cutting
Then, you need to cut the construction paper. you will need one large triangle with two holes(eye holes make them to your size) for mask color base, a black trapezoid, and many small white triangles for teeth. Also you will need two medium sized donuts(to go around the eye holes, size appropriately) and two horns(size is optional on the horns). The horns are irregular so check out the photo. The picture shows the relative size and setup. All sizes are relative to the size of beverage holder that you have.