In some workflows, it is not always necessary to operate on the geometry of an object. Perhaps you are simply looking to access the object's attributes, or filter through your objects before copying them into another file.
For such cases, we have introduced an option called "Ghost Geometry", which allows you to bring an item into Grasshopper that only preserves the information about that object, while leaving the geometry behind. It does include a bounding box preview, as a way to give yourself a sense of where your items are.
This feature can be used to help limit the total amount of memory being used while running your scripts. For more information, read about eleFront and Memory Management.