Aware this may of been posted and sorry if it has.
We have been doing elf on the shelf on the run up to Christmas over the period the elf has been slowly bringing the kids Christmas things - Pyjamas, Bedding, Christmas books and a Gingerbread making kit. I didn't think this was unreasonable and a great way to give them Christmas things before Christmas day.
After a conversation with my SIL she lectured me on what Father Christmas and the elf should bring my kids... so it's 'fair'. We aren't spending Christmas day with them so shouldn't I be allowed to give them scooters/tablets from Father Christmas if I want to, along with presents from the elf?