I'd start by collecting a few treasured favorite 60's-70's muscle cars, ones like the 69 AMX, 70 & 1/2 Z-28 Camaro, 68 Dodge Challenger, 70 Plymouth Barracuda, yes KLS, with the 383 not the 440, lets be slightly conservative here, OK?
68 Nova SS, 65 Impala SS, the list could go on all night.
A racing set the size of a football field, with 1:18 scale cars.
A music supermarket with every guitar and bass imaginable.
Santa, look out, I've got a huge list