What better place to store them than inside the slow cooker? You can't get any closer to the point of use than that.
Now these will always be where I need them. I won't have to go on a seek and find mission in order use them. When I use all of the discontinued liners I bought; hopefully, there will be another brand I can buy. If not I will have to clean the slow cooker the old fashioned way. Baking soda and elbow grease.