The elf on the shelf is a Christmas tradition. In December, people will place toy elf at home to monitor whether the children are naughty or kind. Are you looking for some simple elf ideas on the shelf that can be copied at home at Christmas 2021? We have collected some attractive, trouble-free, sometimes naughty but always family-friendly elf ideas on the shelf. That is to help you and your children count down to Christmas during the holiday season.