Do any funeral parlors let you keep the parts?

So, are there any funeral parlors in the midwest that let you keep the parts? I'm hoping to have my bones ground down for my wife when I die in a few years. I'm 67 and realizing I need to make these plans now and not leave it to my family. I grew up understanding the importance of hard work, planning and non-extravagance. If my dad ate an apple, I got the core. If my dad and mom took a bath, I had dirty water to play around in. That is the way I was raised. Times were different and better back then for children. No messing around. Thanks for the answers.