This "iPhone speaker" is made of a paper tube and cups.
I can make it very easy!
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Step 1: Materials
・a paper tube
・two paper cups
Step 2: Make a Hole
Make a hole in the paper cups with a utility knife.
Step 3: Put the Paper Tube
Put the paper tube into the hole.
Step 4: Make a Hole for IPhone
Make a hole to insert iPhone.
Step 5: You Finished!!
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