Threads like these give me some good vibes indeed.
Mike,my grandpa was also like a dad to me,he was an old chap who died last spring,he fought in our war against russia,and worked his life till his retirement days as feet-on-ground,no nonsense working class man.He tought me to make fire,to whittle,to do a laavu/lean-to,to fish and to hoard old things that others called junk,and to me and him thy were usefull bits n bobs for different repairs and mad-scientist things that he kept on bilding always.As he passed away,the only thing i wanted to have from his stuff,was the handmade puukko that he Always carried in his belt during our fishing and hiking trips.Its worn and used but still a very reliable old knife,that has a load of memory value to me.
So i can easily see how you see your grandfathers backpack.