Many great suggestions here.
Another one is be a hoarder & just have so much stuff piled in every available space , that it would take only somebody who knows you to get your stuff & most important 'Remember' where you put things & if possible have an easy access in case of Fire or a quick exit , also "don't keep all your eggs in one basket.
1' Have a Tomb built were your remains are to be located , make up a great Curse & let the looters have at it cause we ain't taking it with us. lol
P.S. #1 option is for those who don't have anybody worth leaving you Hard earned Finds Or Worked for $ or bling .
You know an ex -wife who will sell everything for cents on the dollar or a person who will trade it to the dope-man for a weeks worth of temporary 'Feel Good'.