Hori TAC PRO (PS4): A mini-keyboard and mouse which I got for about $150. The keyboard has a pass-thru USB jack on it for the mouse. You can use the included mouse or your own. I've tried it on Hard Reset: Redux and it works quite well (just be sure to max out the aim sensitivity settings to 4.00). It feels close to playing on PC if not exact, and definitely better than the DS4.

