Hershey's Whatchamacallit candy bar wrapper - Early 1980's
Here is a great little Whatchamacallit wrapper. This creatively-named candy bar was introduced in the early 80's, and I believe this is the first version of wrapper that it had.
This example came from a recent acquisition, which was a 10-count factory store box - where someone ate the candy bars, but replaced the wrappers and the small cardboard inserts, so they could display the box as if it was still full. Pretty neat!