Istarted a thread about these here a couple of years ago, as I was going through a major Wacky Packages retro spell. If you can find a copy, you can't go wrong with
The Wacky Packages Gallery. It's got every image from the 70's and 80's WP products. I collected the first two series of the new Wacky Packages, but I've fallen behind on it. My inner twelve year old loves these things.