Running a Program on Start Up

Open "Startup Applications"
Create a new item.
Fill in the description and command as appropriate.
This will run after logging in.

As an Example, setting the Logitech g213 keyboard LED through the program mentioned in the keyboard section. After creating a new item:

Description: LED Keyboard Setup
Command: /bin/g213-led -dv 046d -dp c336 -tuk 3 -a ef0000