For legal reasons I cannot go into, you can leave any money and housing property you have to family members, but, any possessions other than that must go, at your discretion, to members of the WF. You have to also state your reasons as to why. You can stipulate that they have to publicly use it or display it for a period of time of your choice. So they can't sell it straight away if it has value.
So, who get's what and why?
eg:
I leave my rotting 2016 Prius to Dan Riffle on condition he uses it as his primary car for 6 months and keeps it in pride of place in his driveway so he's totally embarrassed.
Feel The Power Of The Mark Side