By a house with an entire (very large) room used for nothing but my music. I would then (of course) fill it with several Martin, Paul Reed Smith, Fender, and a few select Gibson (ES Series mostly) guitars and several amps. One nice truck, and I would start a business that I could hopefully leave to my kids when they get old enough to run it. Give them a nice head start, ya know? Oh, my house would also have a nice studio for my wife to do her art work in.