|Unadorned mats are easier to stack and store.|
After a one of our sew-ins we had several mats that did not have the attachments on yet. I found that they were much easier to store and I didn't have to worry about the attachments flattening from being stacked. The mats are designed so that the items are clipped on so they can be removed for cleaning. When I get ready to deliver mats it only takes me a few minutes to get them ready by clipping on the attachments.
|Let the recipient select the attachments|
So, you might want to try letting recipients "build their own" mats. Let them pick out what they want to attach.