Pinwheel envelope

It's not exactly a pinwheel envelope but it resembles one.
It's very easy to make requiring the least resources.
All you need is:

1. Paper (which sheet you want to use to make your envelope)
2. Ribbon (matching colour)
3. Compass and pencil and required stationery
4. Scissors and fevicol

Steps to make this DIY aare:

1. Take the sheet. Fixing the compass at a required radius make four circles. Make sure that the circles are of same radius.          
   
2. Fold the circles into half as shown above. Plac the circles in a such a way that one is above the other and the folded lines meet. The picture might illustrate better.                   
   
   
   
   
   
   
   
   
3. Glue the edges of the ones in the above level. 
   
4. Place the other side of the folds in the same manner- one above another. 
   
5. On the back side of the envelope, add a small portion of glue and stick your ribbon.
6. Tie your ribbon in a desired manner. 
   

You can insert a sheet or a relatively flat present inside.

This makes a perfect gift. I gifted this to my friend on his countdown.