For estate planning, it is best to put your thoughts to paper, document what goes to whom, let the kids start the fight while you're still here to watch.
If you have a mind to pass on your most favorite possessions, here are several options
http://money.cnn.com/2015/10/01/news...ink/index.html
https://www.refinery29.com/2015/09/9...o-preservation
http://www.savemyink.tattoo/
Good Luck
