There was a real problem with people leaving last will and testimony to the Borg, unbelievers who thought they would get something in the will from their older relatives found out everything went to the Borg
I was involved with teams who went in the bethel vans to do house clearance of older ones who died and left everything to the Borg
I have talked about my friend Peter Bullock who worked closely with Jewish dealers to sell anything valuable that was left in the will.
when I was at Bethel there was a vault full of gold and jewellery even fine art. I suspect the big wigs get first dibs on anything and for them it’s voluntary donations how much they give for that expensive watch or something else that was donated. They may not give anything and nobody would know they could just go into the vault and take what they wanted.