Hello Keri, and thank you for posting to our community!
Yes, you can create labels for shipments sent to you, using our manual Prepaid Return Label option from the Quick Ship menu, using the step-by-step instructions in the link below.
Basically you will be creating a dummy order, allowing you to then create a prepaid return label for it, which would ship to you from your supplier. If you include an email address for your supplier, and enable the Send Buyer Return Shipping Email option, using the step-by-step instructions in the link below, your prepaid return label will be emailed to your supplier.
Thank you and happy shipping!