Another whole type of adding percussion to the guitar it to literally add percussive instruments to the guitar, like a shaker or bells that you can tap with finger while you strum a chord. Or you can add a tambourine or chekere or clave or shaker on your foot or feet.
Of all the things above, the most important would probably be to play a strong backbeat. It really thickens the music up. And if you are playing with people you can also use it find a tighter groove.