Hey Joria, good to see you. When you have a holiday and choose holiday gnomes, you just place your choice of a gnome in your house. On the day of the holiday, you have to choose to appease the gnome. If he gets a halo your good, but more show up and you have to appease all of them or they will not go away. After they all get halos, my sims kicks them and they poof, disappear, leaving behind a trash pile and usually a pack of seeds. If you don't get to them in time, they will destroy your house. At one point, every appliance, sink and everything else, was broken. Thank heavens my sim was level 10 in handiness, lol. So far, I have chosen random items to give to the gnomes and whatever I pick, they seem happy with it.