Need help with percussion for band?

Hey guys, me and a couple of friends are writing and playing songs with a sort of indie acoustic sound, we need to add percussion to the mix, but we don't want to add a full kit, because 1 - it wouldn't compliment the sound and 2 - we don't have a drummer, or at least one that isn't already doing something else (me - lead guitar). What sort of minimal percussion could we add that would compliment the band without edging to near one member standing at the back with a triangle territory. Cheers Chris x