Rainbow crosses {Instagram mini quilt swap}

I've been working away on the little blocks for this mini quilt for the last few weeks. I had the idea for different scaled crosses a while back and I just started making them without planning out the layout too much. Originally I planned the 3" and 6" blocks, and then after making a few I realised I needed a bigger one too for the impact. I had fun piecing these, and they were a little bit addictive to make, even if they did involve a lot of teeny tiny piecing.

Now I need to figure out what I am going to do quilting wise. There are a lot of seams so I feel it needs some machine quilting even though my first reaction was to hand quilt it echoing the crosses. Ideas anyone?