Allow for user to create folders or categories for favorite items.

[TylerLarson]

Create folders to store favorite items in AGOL rather than just have a list of favorites so they can be categorized by a user.

[RobertBorchert]

The ability to make favorites in AGOL already exists.  If you click the little star next to your service it will put in in your favorites.

[TylerLarson]

Correct, but there is no way to categorize your favorites.  If I have 50 favorite layers there is no way to categorize those favorites, they are just listed out. Categories like you have for groups would work, or creating folders.

[RobertBorchert]

you could create Tags for them and after you put them in your favorites you can hits the tags button and a drop down will appear. you can either select a tag or start typing one in

[TylerLarson]

That would work, but how does a user create/assign a tag on a favorite item?  I know you can't tag someone else's layer so not sure how that works.