I don't keep my tins unless there limited edition or vintage for display in my smoking room and toss the rest don't want to much clutter but I do like the art on tins.
I've seen a guy online somewhere do t remember where lay out all the Tins and poured a clear over them incasing then all and when the clear cured he had a pretty cool coffee table ill see if I can find it
Band-aids ("plasters" for my brothers and sisters across the pond), butterfly sutures, tweezers, small roll of gauze, medical tape wrapped around a pencil, anti-septic wipes, Neosporin, Aleve, antacid, antihistamine, Immodium AD. 50g rectangular tins work best.
-Jason