Below is a comparison of the blooper from this series (with metal chain) with the one in the Mario kart items swing series (with metal chain removed). They are exactly the same, except with an insignificant difference in its manufacturing labels at its back. Instead of "2009 Nintendo T-Arts Made in China", the latter states "2008 Nintendo Yuijin Made in China".
As for the Goomba, it seems like an identical mould as compared to the one used in the Mario Galaxy enemy swing (with metal chain removed), except that it has a lighter shade of brown, and its legs' position has been mirrored from the original.
If anybody is looking for a particular piece from this series, please feel free to drop me an email at n3kketsu@hotmail for exchanges/trade. =)