how to store a car seat

i’m at a loss right now.. a few weeks ago i had a miscarriage at 14 weeks. i still have so many unanswered questions and am not sure how to even feel, i’m very much struggling with the grieving process. i hate being reminded of it so i’m packing up the stuff i had already got (i started shopping really early which i now know why they tell you to wait…) i got a brand new 2022 Nuna car seat for a reallyyyyy good deal on Fb marketplace just before i lost my baby. the only thing is they didn’t have the box so up until this point it’s been sitting at my old room at my grandparents house. i live with my husbands family for right now and they had no idea we were even pregnant (it was unexpected) and we still don’t plan on telling them about what happened. but since we’ll most likely start ttc sometime in the next year, when we officially move out, i want to correctly store it so that it does not get damaged. the only thing is i don’t want anybody to see it and question me about it since they frequently come into our room. any recommendations? i was thinking maybe putting it into one of those big plastic containers and storing it in the back of my closet ??