Some list fields have the option of generating tabs for each item.

I would like to be able to select the items in a list that should be added as tabs.

For example, let's say I have a library of exercises. The Excercises can be of the type "Outdoors", "Indoors" or "Stretch". I want the Outdoors and Indoors tabs to always show in the library, but not the Stretch tab. I can achieve that in part with tree lists and filters, but that comes with it's own limitations.