My theory is if you want to invest in collectables, a good rule of thumb is to look at the toys/cars a 40-45 year old would have had. As they approach 50, that's when things get big. It used to be Lionel trains and '57 Chevys. Then Star Wars toys and 60s cars. Now it's 70s bikes and - ugh - 70s cars. Just look back 35 years. Whatever was big in 1983 or so should be coming up. Pompadours? Crack? Little GI Joes? I dunno.