I have a niece and a nephew that I usually imagine willing such items to, but I'm not sure they'd be interested. My stepsons are a possibility, but I'm not sure they'd want them, either. I've given my younger stepson a good handful of decks but I never see him taking a pack out to do anything with.
Unless my wife wanted to keep them as a memory of me, I'd probably have them either donated to a card museum or university collection, or, assuming there was no interest among them, I'd auction them on eBay or let my wife do so after I'm gone.
Y'see, gang, when all is said and done, the one with the most toys DOESN'T win...