song suggestions for Ukulele-Cajon setup

[Essah]

I recently formed a little mini-band kind of thing with a girl playing Ukulele(and singing), with myself on Cajon. We're currently trying to build a repertoire. We have about 7 songs so far that we can play. I'm looking for more songs like these that are suitable for a small acoustic setup like ours that don't require other instruments to sound good. I figured I'd ask if anyone here had some good suggestions.

Currently we play:
West coast - Lana Del Ray
I'm Yours - Jason Mraz
Royals - Lorde
Lucie in the Sky of Diamonds - The Beatles

[freezeblade]

Can you sing? if so, some Kings of Convience could possible, and pretty awesome, however a bit slow.

Amanda Palmer - "Ukulele Song" would be perfect.