Step 1: Ikea
if you have been to ikea and got a piece of furniture before you will know that the box come in two pieces, much like a shoebox where the lid comes off. well for this i used one of those halves.
Step 2: Shaping
get a pin and stick it in the middle of one of the halves of the rectangle then tie a string onto it and then mark with your thumb how long it is between the middle and the edge of the square (half the rectangle should be roughly a square) see pic it should explain better. and with the end of the string that you marked with your thumb and tie on your pen. this then allows you to draw a circle.
Step 3: Cut Away
once you have your circle shape (with flap) fold it over on that line that you made arlier then start to cut around you first circle to mimic it. (again see pic)
Step 4: Making It Into a Costume
for me the choice was obvious. hide your head in shame. if you want yours to be different it wont be that hard to adapt.
if you want yours to hide your face then you will have o make an eyehole after you decide what size you want yours to be.
so that you can hold the costume up you will need something like suspenders, if you have some already then that is fine just attach those, if not you will need to make some. nothing fancy just two pieces of duct tape stuck together, thats what i used.
to make them take two piece of duct tape one longer than the other. the shorter one should be roughly two times the length of your waist to your torso. then stick the two pieces of duct tape together so that the longer one sticks out with sticky bits on each side. do this again so that you have two strips. then stick one of the sticky bits onto the inside of your pancake costume (your costume should be like a book the way it opens up) once you have stuck the one strip onto one of the sides you should put the other strip on the same width apart as the distance between your shoulders. then stick the other side to the other side of the costume.
this is all very hard to explain and i am very sorry about how vague it is.
after you have made the suspenders the costume should no longer fold out anymore and should be held by the straps. once it is like this you can fold it into a circle and tape the two loose flaps together so that it wont open anymore.
Step 5: Finishing Touches
you could also add a square of butter using a cereal box which has been reshaped slightly.
this could also be used as a very strange halloween costume by giving it teeth and stuff.