If you asked me what I would spend a 'free' 10k on at 15, 25 or 35 I would have given you radically different answers. I don't expect what someone does with basic income at 65 to have much relation to what they would do at other stages in life.
I suspect when I'm 45, $10,000 won't get nvidias flagship card, so I'll let you know about that one when I get there