A simple way to make shining, colourful streamers.
The things you need:
1. Sheets of thin, coloured paper
Step 1: Make three folds in the paper as shown in the figure.
Step 2: Make slits at regular intervals all along the length of the paper (L1) without cutting the opposite length (L2).
Step 3: Now repeat the same procedure making slits from L2 towards L1. Again, be sure that L1 does not get cut.
Gently open the pattern. A broad streamer will flow before your eyes.
If you want to make thin streamers then just make a single fold. More the folds, broader the streamer.