When Jessie brings Rick a tub full of supplies, before he opens the door the toilet paper is by her right hand. After he opens the door, the toilet paper is now by her left hand. And when he takes the tub from her, the toilet paper is back on her right side.
During Rick's interview, there is a clarinet on the bookshelf behind him. The bell is from an entirely different clarinet, but that's fairly common. What is not common; however, is that whoever put the clarinet together put the lower joint on backwards.