I noticed this too, and I have a few theories:1. Maybe nobody brought back a "winning" gnome, so it went unmentioned.
2. They will need to do something stupid with their gnomes next episode.
3. Travelocity paid enough money, and said, "get the gnomes in the episode, we don't care how you do it."
4. Maybe the gnomes were there to reinforce how short Charla really is.