Hello there, @radar-9628.

We can create a customer profile for the sponsor. Then, make a sales receipt or bank deposit to receive the money. 

Here's how:

1. Go to the Customers menu.
2. Click the New Customer & Job drop-down arrow.
3. Choose New Customer.
4. Enter the customer's name and other information needed.
5. Hit OK.

Once done, create a sales receipt. I'll guide you on how.

1. Go to the Customers menu.
2. Click the Manage Transactions drop-down arrow at the bottom.
3. Choose Sales Receipts.
4. Select the customer from the Customer: Job drop-down arrow.
5. Choose the item, then enter the other information needed.
6. Click Save & Close.

Also, create a bill and then make it billable to the client.

1. Go to the Vendors menu.
2. Select Enter Bills.
3. Choose the vendor from the drop-down arrow.
4. Select the account, then enter the amount.
5. From the Customer: Job drop-down, select the client's name.
6. Click the Billable checkbox.
7. Hit Save & Close.

I've added this link about customizing customer sales reports in QuickBooks. It can help you easily track your sales and expenses using predefined customer: Customize customer, job, and sales report.

Let me know if you have other questions about creating invoices in QuickBooks. I'm always around to help you anytime. Have a great day.