Pending 1 active item at a time

[JordanH]

I am in need of a way for when multiple items of a certain item type is purchased, that only 1 be active at a time.

Currently, someone can have several items activated and it really messes up some CSS.

 

[etrd]

Agreed but I think this is somehow complicated if user wants to combined the effects of 2 items.
The best route probably is to add a feature called "Item Group" to categorize or target specific items only.
When an item in a group was set as active, all other items in the group will be automatically deactivated.