Ear Cups
thingiverse
This gadget is more about sparking imagination than offering a genuine answer to hearing impairments, but it could be an entertaining toy to experiment with. I printed it using transparent PLA plastic, although for added coziness, a flexible filament might be the way to go.
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.