Buddy of mine gave me all his broken controllers. Time to repair them! Should be an easy fix as most just have stick drift and dead internal batteries. Wish me luck :p :
How to Fix PS4 Controller Analog Drift (R3 or L3 not working) - iFixit Repair Guide
PS4 Controller Not Charging: Common Errors and Fixes
3 Easy Ways to Fix PS4 Controller Not Connecting to PC
Why Does My PS4 Controller Keep Moving By Itself? - The Gadget Buyer | Tech Advice