You can use any type of paper. Here I´ll show you how to make one:
1. Cut out a piece of paper.
2. Then fold it like an accordion and you will end up with a piece of paper like the one below.
3. Now staple and put on glue on one of the sides.
4. Bend the paper (the glued sides) together and you have a halv circle. Repeat this on the other side and you will have your circle. Now you can decorate.Wish you luck!