I second Gusy12's recommendation to check wheel play when jacked up. These noises should be looked into and could definitely be safety issues.
My 2011 @ 67k mi was making a lot of clunking over bumps; I found a lot of left-right play (no up/down though), but I could see the ball joint moving/clanking when I played the wheel left-right.
I suspect a lot of this is because they use almost all the same suspension components as the Juke on a MUCH heavier vehicle.
I DIY pressed them out/in - normally not a big deal, but these joints are a huge PITA; especially if in a rust belt.
First, I had to torch and hammer the knuckle/joint bolt out, so I bought new bolts. Then, I could not separate the joint with a pickle fork, even stacked. I had to buy a separate tool that presses by post out, but since it sits flush to the knuckle unlike most vehicles, you need to stick a small nut on top in there for something to press against.
Of course, once I replace the ball joint, there was still movement, but now it was in the tie rod end; which was very stiff by touch, but probably got worn prematurely from a failing ball joint.
I'm guessing everyone who owns a early Leaf will need ball joint + tie rod end replacements in the coming year.