Starting Dec 1st, each day until the night before Christmas let your elf pick a fun activity to do together as a family or sometimes they hide for your kids to find and turn it into a scavenger hunt.
These can be used several different ways the  elf could also bring the box on Nov 30th, let the kids look through the sack of activities and return the tokens in daily through the month of December! 
24 tokens come in the jar, jar also comes with a lid.