Ear Cups
thingiverse
This is more of a conversation piece than a real solution to hearing loss, but it could be fun to play around with. I printed it in clear PLA although for comfort a flexible filament might be better.
Download Model from thingiverse
With this file you will be able to print Ear Cups with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Ear Cups.