I made a will last year and that got me thinking about two aspects that the will does not cover:
1. Connecting things I own. Assuming I am the first to go, I don't expect my wife to know which spare wheels, tyres, inner tubes, brake pads and so on go with which bike, nor be able to look at my musical equipment and know which bits are worth a lot and which are near worthless. I should start a register of my stuff, just like I have with software licence numbers.
2. The digital will stuff. In a sense, my password program is my starting place. It covers every site I have registered at so banking, fora, shops and more.