To enable this, create a smart collection named All Products and set the condition to 'Product price is greater than 0'. You can create a collection through the 'Collections' menu in Shopify admin. Or you can turn this section off through theme settings.
This is an example of what a 9 shirt memory quilt would look like.
Your choice of the back piece is: Black, Red, Navy Blue, Grey, Pink, Purple, or Brown.