The 1966 set included just one insert, the rub-offs. The set was made up of 100 players plus a team pennant for each of the 20 teams. They were colorful and I'm sure a hit with the kids.
Sadly, Topps is not making rub-offs for the Heritage set. They made all sorts of other inserts, relics, manu-patches, autographs, stamps, and coins. But no rub-offs.
Maybe I'll make some fake rub-offs since Topps didn't. Stay tuned.
In the mean time, you can still enjoy the original 1966 Cubs rub-offs.