Enough with the legalese. I think a MMM will needs, above all, to be pretty funny. I mean, you have all this capital, you've read enough so you don't want to leave it to your kids, what better use than to have a hilarious and nourishing death? I picked those adjectives semi-randomly, so please feel free to riff on the theme.
I'd like to see that your will specify a cartoon theme, of your choosing, for the funeral. Maybe you place a costume-requirement on the proceedings, fantastic! The specifics are up to you, get creative! If you want to celebrate your death at a higher level, specify a ridiculous pose that your corpse could be frozen in. Maybe consider animatronics?
How can a will help the future generations enjoy a tasty treat? Demand burial in a cardboard (or otherwise biodegradable) box, underneath a tree the whole family can enjoy! Consider a tasteful sign to be planted, informing bypassers they can bite into a wholesome Kriegsspiel apple! Or a dragoncar fig?! Let your imaginations run wild!