Chris likes shooting pictures during the holidays because it's so different from any other time of the year. Lights, for instance, create a mode, and you can use the placement of those lights, with a shallow depth of field, to make a beautiful image. But you don't want to use a flash. It'll completely kill the mood that you're trying to create. It'll also wash things out and blind your subject. Ultimately, killing the mood. You could use an orange gel on the flash or bounce the flash off the ceiling. That could help. Chris also recommends toying with the white balance to make your image warmer. Chris also says your phone may have a bi-color LED to adjust the image to make it warmer. Go outside the house and shoot through the window to the inside. This gives you a nice cold/warm contrast.
Don't forget our next photo assignment is - HOT. Take a photo of, about, or otherwise concerning the concept of "HOT" and then post it to the Tech Guy Group on Flickr. Make sure to tag it with the word "HOT" as well! And if Chris likes it, it could end up on next week's photo review segment!