You may feel like after Christmas, every room needs to be cleaned out, but if you don't want to spend all of the day cleaning inside, choose to focus on the kitchen and lounge room and save the rest for another day.
Wipe all of the counters, unload the dishwasher and put it all away. Take out any empty bottles to the recycle bin and restock the fridge with drinks. Offer it a simple once-over with the mop or hoover when it comes to the front room, and handle any stains that might have mysteriously appeared.
Inevitably, Christmas presents come with a lot of packaging, and cleaning them out of the house will make things feel more organized immediately. Break down the boxes so that you can squeeze them into the recycling bin and ensure that any plastic packaging is deposited in the correct bin.