Here is the Disney print I have. Busy indeed. I’ve got ~ 2 yards here I think. Quilt is 69” square.

But .... what does your resident Cat Adviser have to say about it?
Guess s/he saw all the mice and said, "Must get on the job!" :)

My eyes keep going to your border print ... IOW pulls me away from the true beauty of the quilt, all the mice heads!

My thought is no border or a solid black one with black binding.

Ok, I agree that if you have enough fabric add a border of the dark blue that we all thought was black. ;) And then use either one color or little bits of all of the colors you have left over for the binding. I would not lean toward a print. It might distract from your blocks. I also think that leaving it as is and using a color for the binding would look good too. Not being wishy-washy, but you do have choices. Just as us and away we go with lots of suggestions.

I love it just like it is, I'm not one for borders except once in awhile.

Looks great without a border.

Great quilt! It does not need a border.

If you are like me, without a border, I'd probably nip into the cornerstones more than I'd like with the binding, rendering them not square. So I would add a dark plain border. But it looks great just as it is!

I tend to add borders even if it doesn't call for them. Since you don't have enough of just one fabric, how about strip piecing what you have, then cut them down to what ever width border you want? If you don't want to do mitered corners, just add a square of one of the fabrics at each corner. This way you'll use up what you have plus have a border. You already have a sashing of black that separates the blocks. I like using up what scraps I have of the fabrics in the quilt. Scrap breed overnight.

I like it without a border but then most of my quilts I don't put borders on.