How to answer the “What If I need it in the future” question while organizing?

I want to organize my garage this month, and its going to be a HUGE undertaking, we have just been piling things up there. There are ton of my 3.5 yr olds baby/toddler things in the garage stored away in boxes. Most of these are expensive & in excellent condition. We have kept them around IN CASE we decide to have another child. How do I answer the 3 questions for something like this? Given this is a possibility of the future and not the present?