Factory Entertainment, a Ghostbusters licensee has been working on Ghostbusters Shakems which seem to be a better take on the bobble head concept. Which will include at least a couple of Ghostbusters, Stay-Puft, and Slimer. The concentration appears to be on both Stay-Puft and Slimer. Today Factory Entertainment is showing new pictures of both the Stay-Puft and Slimer Shakems.
The exact release date is TBD. Some retail sites are listing either April or May 2014 with a suggested retail price around $50 USD.