When Elena gets the serving spoons out of the drawer for dinner, she takes out two wooden utensils. However, when Bonnie takes them from her, there is only one spoon, and it is made of metal.
When Elena is eating dinner with Bonnie and Stefan, she is wearing a long necklace. When the camera cuts to Elena at one point, the necklace is tighter against her neck like a choker. Later, when the camera cuts back to her again, the necklace is loose around her neck.
When Caroline wakes up after her night with Damon, she's wearing a grey bra. When Damon and her were making out, she was wearing a pink bra.