How to make hidden collectable

I am trying to make some escape rooms my last room is to find an object hidden somewhere. How am I supposed to make like an item spawner but will only give it to you once?

Maybe an invisible button and when you click it it disappears? not sure how to do it though

Place a button and set “visible in game” to No. Next make it broadcast on a channel when it is pressed, and also make it deactivate on that same channel. connect the button to an item granter with your hidden object.

Cool! Thanks that helped.

Or use a trigger that has a max trigger amount!