Do you know any good acoustic songs to play on guitar?

I want a few songs that are easy, with just strumming 4 or more chords, like Taylor Swift songs. Or plucking some notes, like Hey There Delilah by Plain White T's or Good Riddance by Green Day. I already know most of the Taylor Swift songs. And I already know the two songs I used as examples. Oh and I want songs that are originally played on the acoustic guitar. A lot of older rock songs would be appreciated. :D