The paper works best if it is thick.so, I just used an index card.
Here is a video that will help you.
Step 1: #1 Gather the Materials
You will need scotch tape , an index card [2*2 in] , two tongue depressors, and three rubber - bands.
Step 2: #2 the Rubber Bands
pull a rubber-band across one of the tongue depressors.
Step 3: #3 Cut the Paper
Next, you will cut 2 pieces of the index card that are each 2*2 inches and fold it three times.
Step 4: #4 Make the Paper Sticky
Then, you will curl the tape to make each side sticky.
Step 5: #5 Put the Paper On
Now, you will put each of the sticky pieces of paper on the tongue depressor that does not have the rubber - band on it.
Step 6: #6 Put It All Together
Last step of all , you get to put it all together.You squeeze the two tongue depressors together, and wrap the last two rubber-bands as tight as possible on each end of your new harmonica.