How do I fix two things triggering at the exact same time?

Essentially as I pick up Items I move them to my bag. My code will sort them out and put them in separate bag slots as they arrive.

Issue: 2 pieces of gear hit at the same tick. This will send them both to the same slot.

What is the best route for adding a queue to my code to ensure it is one at a time?

The Array object works just like a queue. Push the uid on the back, pick using the front, pop the front when you pick.