I have a dog named Zoey. My sister found her when she was a puppy. She "smiles" and I am not joking. I don't mean like...she looks likes she is smiling. Her upper lip actually comes up and she shows her teeth. She normaly does this when people she knows pull up in the drive way. It gets me laughing and its a joy to come home to.
The little boy next door. He is unbelieveable. He likes every sport there is. I will go outside and he will be playing baseball with his dad. 20 mins. later he is playing tennis. I will say to him, I thought you were playing baseball. He will say, "nope tennis." Half hour later he is playing basketball. He is 5 yrs. old.
Also some tv shows if they are a comedy, will get me laughing if they are really funny.
There are funny videos that you can see on You Tube: Jeff Dunham and different puppets. My favorite is Jeff Dunham and Peanut. He really gets me laughing when I watch him with his puppets. He has several different ones.