I like to use this app for guitar chords/tabs: https://play.google.com/store/apps/details?id=com.ultimateguitar.tabs
If you search starkid or team Starkid lots of tabs/chords should come up. My personal favorites to play on guitar is Harry from avpm or Even Though from MAMD (I like simplify on that one to the base chords, and it still sounds great... Ex: C instead of Cm or whatnot). Hope this helped :)
Edit: ALSO!!! Together from Firebringer is also very fun to play with only a few chords!!! All these songs (and more!) can be found on that app :))