Belle serves Rumplestiltskin tea and she drops a cup, breaking a piece off. This is similar to Chip and Mrs. Potts from the Disney animated film, Beauty and the Beast (1991).
Rumplestiltskin lies to Belle when giving her a rose, saying he got it from an old peddler woman. This is a nod to the Disney film Beauty and the Beast (1991), in which an old peddler woman gives the Beast (Rumplestiltskin) an enchanted rose.
On the other side of the room, the wizard's hat from The Sorcerer's Apprentice segment of Fantasia (1940) sits atop a pedestal.
The book that Mary Margaret and David both read while they both sit in Granny's is "Anna Karenina." Interestingly, this book is a tragic story about a married aristocrat and her affair with another man. David, who is also a married person and having an affair, even remarks that he can't wait to see how the book ends.
When Rumplestiltskin is looking in the mirror, there is a unicorn tapestry in the background. This same tapestry can also be seen in Harry Potter and the Half-Blood Prince (2009).