I think an Old School Series of products from the 80's and 90's (separately, of course) would be great. I will think about that, but a few thoughts off the top of my head:
*I like the idea of products that had their heyday in the respective decade. However, not all products in the original series Wackys "peaked" in the 70's, so I don't think things need to be completely limited to that. I mean, did Planter's Peanuts (to pick one of many examples) reach its zenith in the 70's? I'm sure not. As long as the parody is of the respective decade's packaging, it's all good to me.
*Jolt Cola!
*I'm not certain, but I think the Golden Oreos may have been introduced in the 80's. Again, while hardly limited to an 80's product, I think something like that would be fair game for an 80's set. So maybe an item introduced in a decade is a good reason to go with it.
*Even though some get upset when a product like Tide has been parodied multiple times, I don't think it's such a bad idea. It's even less bad if the packaging has changed a bit. The bottom line to me is that the parody/character is good. If so, it doesn't bother me if the item was already done in the original series.
*Two of my favorite categories of products are cereal and trading cards. I have some good research materials for those. I'll look through some and post a list of some suggested titles.