I want to be cremated, put in an urn with a curse on whoever loses my ashes. So, someday when my future family members are living on the moon, one of their friends can point to the urn and say, "What's that?"

Future family member, "Oh, they're the ashes of my crazy great, great ,great, great, great aunt Mary! Careful! Don't touch!"

The only problem I can think of is how will they know that they will be cursed if they lose my ashes if I'm not alive to tell them about it? Ok, wait, 2 probelms, I don't know how to put a curse on anyone...it'll have to be a pretend curse, I guess.