$10,000

Relevant Code: 

[SerializeField] GameObject pref_bill;

    GameObject[] bills;

    Vector2 bounds = new Vector2(16, 9);

    // Start is called before the first frame update

    void Start()

    {

        bills = new GameObject[10000];

        for (int x = 0; x < bills.GetLength(0); x++)

        {

            bills[x] = Instantiate(pref_bill,

                new Vector2(Random.Range(0, bounds.x), //random position

                            Random.Range(0, bounds.y)),

                Quaternion.Euler(0, 0, Random.Range(-15, 15))); //slightly randomize rotation

            //slightly randomize color

            bills[x].GetComponent<Shapes.Rectangle>().Color = new Color(.11f, .5f + Random.Range(-0.1f, 0.1f), .13f);

        }

    }