I have created an Inevitability Box to help our two DDs sort out our estate when we no longer need it. The box includes our wishes for funeral, as well as location of legal documents, wills, DOBs, NI nos. Driving Licence Nos, Passport details, GP details, Life Assurance details, Bank and Savings accounts etc and who we will need / want them to notify on our demise. I have also included a list of my favourite music as younger DD asked for this. I just wanted to make things as straightforward as possible for them, and to let them know specifics on our preferences.
I have diarised a reminder to review the Box contents every three months to ensure it is all up to date.