Toy Fair likely more like a Ghostbusters convention at the Funko booth, where they have announced a number of Ghostbusters collectibles announced at the show. I think it's just easier to simply list everything that they've announced...and it's a lot.
Pop! Keychain Slimer
Pop! Keychain Stay Puft Marshmallow Man
Pop! Pez Slimer
Pop! Pez Stay Puft Marshmallow Man
Pop! PEZ Dr. Peter Venkman
Pop! PEZ Dr. Raymond “Ray” Stantz
Pop! PEZ Winston Zeddermore
Pop! PEZ Dr. Eegon Spengler
Pop! PEZ Stay Puft Marshmallow Man (Angry) and Slimer Glow available at Walmart.
5 Star Dr. Peter Venkman
5 Star Dr. Raymond “Ray” Stantz
5 Star Winston Zeddemore
5 Star Dr. Egon Spengler
SuperCute Plush Slimer
SuperCute Plush Stay Puft Marshmallow Man
Slimer pen toppers
Stay Puft Marshmallow Man pen toppers
Ghostbusters Mystery Mini Series (Funko Specialty Series and GameStop Exclusives)
Pop! Movie Moment - Dr. Peter Venkman and Dr. Egon Spengler struggle with a resisting Slimer
Pop! Town building and Peter Venkman Pop! figure
Pop! Slimer chowing down hot dogs
Pop! Scary Library Ghost
Pop! Dr. Peter Venkman
Pop! Dr. Raymond Stantz
Pop! Winston Zeddemore
Pop! Dr. Egon Spengler
Translucent Pop! Slimer chowing down hot dogs (Walmart Exclusive)
10 inch Super Sized Pop! Stay Puft Mashmallow Man (Game Stop Exclusive)