I remember building that '57 Chevy Nomad model, too. Lucky for me, I opened my Wacky Packages "time-capsule" in 1997 (which wasn't really a time-capsule... it was just big shoebox I thankfully kept & stashed at my folks during the years I might have thought they were stupid & sold them.) When I found John Mann's site in Jan '97, I went & retrieved it to find all my sets in plastic bags (2,5, and 7-15 all complete, with most of the 6th and 16th, and partial 1,3,4), as well as a complete Phoney's Funnies, Crazy Covers 1 & 2, and a near-complete Wacky Ads set. Much of it needed upgrading of course. Who cared about condition back then? ... but it was fun to identify all the cool variations in there from John's site. I think I was up until 5:AM that night digesting it all & transforming into one of the many burgeoning, late-90's, Wacky Pack fanatics.
Because the fam also knew not to toss anything without asking me (as I know happened to a ton of collectors unfortunately), I've also still got all my old Tonka's, Legos, Lincoln Logs, Tinkertoys, and Star Wars stuff.
Desperately missing from my kid collection, though, were my bucket-full of Hotwheels (red-lines included), and marbles... which I sold to some kid down the street for next to nothing when I was 12 and moving on.