Awarded for getting 10 items. As you play the game, people will randomly come up to your character and give them gifts. These are stored in your character's "room", (progress screen).
The fastest way to acquire gifts is to start a game with 4 human players. Plug in 4 controllers, (or as many as you can), but only sign the first controller into your profile. Any items the "human" players receive will appear in your room and count towards your total.