Hey there, @CarterL2501 -
Welcome to the Community.
As an option to add the greeting card you mentioned, you can create a modifier. This would allow the customer to add that option.
Check out the Best Answer by Nika on this thread!
Please let me know if you have any other questions.
Kassi
Community Moderator, Square
Sign in and click Mark as Best Answer if my reply answers your question.
