I love to use up all the scraps in my shop and this is what I made a couple of weeks ago. 2 were sold and 3 were auctioned off at a Christmas party. The sound is just about doubled as it travels thru the wood. These were made to hold iPhone 5 or 6 and can easily be altered for Galaxy Phones.
My Woodshop is my happy place😎 trimandcraft.ca https://www.facebook.com/Trimandcraft