We jokingly do "Grinch on a bench". My kids begged to do Elf on Shelf, even the oldest who knew about Santa. My husband and I are against tattle tale elfs that spy on you. We say that Santa gives gifts because of love. We don't stop loving because they did something wrong. So instead of Elf on the Shelf, we bought a small stuffed Grinch and Max. They wear Elf on the Shelf clothes and get moved around. However, we started by explaining that this is a fun thing and not about telling Santa anything. Mom and Dad move it and forget sometimes. We'll only do it if you're ok with us forgetting sometimes. If one of the kids comments about the Grinch not moving, they help us come up with an idea before their siblings see it.