This is a Top Hat made out of duct tape (100%) I used packing tape on this instructable, but I have made a couple out of just duct tape, so it is very possible to do it with just duct tape. Another thing, this is my first instructable, so bear with me. Thanks, and I hope that this helps you.
Step 1: Getting the supplies.
Ok. Let's get the supplies. What you will need is:
A duct tape roll (it can be colored, it's really your choice)
An X-Acto Knife or Scissors (I prefer the X-Acto Knife)
And a Cutting Board
Step 2: Measuring your head.
Ok. Now that we have the supplies, lets get started. First measure your head. Then you add an inch or two, and cut it. Make more of the same sized strip, make about 9 or 10, the more you use the taller your hat will be.
Step 3: Making the Sheet.
Ok. Moving on. Now that you have the 10 measured head sized pieces of tape, now we are going to make a sheet. Ok. The first step of making a sheet is, take one of the pieces and put it sticky side up on your work space, then you take another piece and lay it sticky side down half way in the middle of the piece with the sticky side up. There should be one half of a sticky side left, I want you to fold it down. Then flip it over and repeat the process until you are out of strips, then when you are out, you will have the sticky side left, take the sticky side and fold it down to the non sticky side like you did at the beginning of the sheet.
Step 4: Time for Trimmin'
Ok, Now that you have the sheet done, get your cutting board out and your X-Acto Knife, and trim off the excess adhesive parts.
Step 5: Getting the sides of the hat ready
Ok now that your sheet is all trimmed and ready to go, lets put it around your head and tape it together, you want it to be just a slight bit loose that way it will slide on and off easily.