As a 13 year old during the eclipse last year I loved watching the eclipse, but was bummed that there was no way to record it on a phone without maybe damaging the phones camera. So I decided that I would 3D print something for that purpose! This is for my dad's iPhone 6S, but you can mod this for almost any phone.
Step 1: Glasses
Cut one reflector out of your eclipse glasses like in the pictures. ( I found my glasses in the trash! )
Step 2: Print Stl File
I used Slic3r prusa edition 1.5mm optimal with supports on.
Step 3: Finish
Remove the supports from your print. Slide the eclipse glasses into the top slot on your print.
Step 4: Take Loads of Pictures
I was not able to take any pictures during the eclipse but here are some pictures, using the device, of the sun on a very bright day!