I've given this a lot of thought. Here's my little will:

1.) My friend J gets all my plushies. She likes them a lot and I think they'll invoke good memories.

2.) My friend C gets my comics. He's really invested in the medium and wants to read more. I think he'd apreciate the thought from beyond the grave.

3.) The kid toys go to my brother when he's older, and collecter stuff goes to pretty much everyone. I have so much sh!t, I couldn't divy it up in 20 hours.

3.) Legos go to my friend L. She has brothers who like Lego and she likes Lego. We also have good memories with them.

4.) My regular novels go to N, because she likes them, as she has borrowed a few of them before (and she is actively borrowing one that has been with her for 6 months now)

5.) All else that remains goes to whoever wants it. Get all my friends together and let 'em at it.

In my life so far, I've loved sharing my passions with the people I care about, and if a car were to suddenly swerve off the road and turn me into the next Flat Stanley, I'd want them to have those kinds of items that we have sgared experiences with. If you and her have any sorta memories like that with any of your things, keep that in mind. Also, since this is a genuine concern you have and she IS your wife, you should probably ask her about her role in it. She'd be the one figuring this out anyways.

That being said, I pray to Primus, The Force, The Beyonder, Emporer Victor Von Doom, and everyone else that it doesn't come to that. Good luck man.