Hi!
I'm currently working on a Marvel Toybox and I was planning to use the Green Goblin Glider as an Item you grab so you can continue playing (if you don't have a flyer) so I created an Object Generator, and give it some logic connections so I would spawn after I beat Green Goblin. Thing is, it kinda tries to spawn the object but it doesn't seem to work (3.0), I looked through some forums and event created a toybox just to test it out. Doesn't seem to work. So I got around it by using the Inventory Manager Creativitoy and setting the Green Goblin Glider as default. When you start the level the Inventory Manager is deactivated, and when I beat the Green Goblin it's activated, and setting it up as default it automatically equips it. So that's nice.
Hope this was useful.