He’s leaving a letter, pen and stickers for writing a letter to Santa.
Yesterday it was colouring sheets where the elf had just started colouring in.
My son will be 3 in Feb so not doing anything too messy or naughty with the elf as he doesn’t need any encouragement to do any of those things 🤣. Not sure how old your DCs are so they might be expecting a bit more elf excitement than that! 😊