Sorry to keep comparing to MMF, but it's the easiest way I can explain certain things.
In MMF, if you make an event to create an object at any point, you can delete said object from the layout editor and it will remain in the object bar. This helps keep my layout editor clean and without masses of random objects laying around everywhere.
Can something like this be done in Construct? Putting the objects in an invisible layer is one thing..but I'd like to keep them out entirely if possible.