Depending on where you are at, I can possibly send you a Nano ball and possibly a piece, depending how my broken one is doing (Hoping it is repairing itself). The Nano is a tiny bit smaller than a marble/dime, very small.
Since, I am in the middle of moving so I wouldn't be able to do shipping for a couple weeks when I get the tanks settled. There's a lot going on.
If you don't find some one else to get you some. PM me, in two weeks! By then I may find I will have a couple more to add to it. Depending on the replacement cost around $2. plus actual shipping cost.
Where is it being shipped to? Can you do Paypal?