"Fundraising? Hey, I just brought cash, figured that was faster...no, no, don't ask where I got it, it's better that way."

But in seriousness he'd probably go into the archives of the Random Shit he or his grandfather/father stole over the years that he never bothered to fence or give away, and sell that. So you'll have antiques, gemstones, gold, and just utterly random weird crap. Maybe some classic cars.