If a big part of your holiday involves giving & receiving gifts then plan ahead & prepare space for new items that will be coming in. Grab a box or garbage bag & do a quick sort through your collection of games, puzzles, toys, clothes, or decor and donate/pass on the items that are no longer needed or used. Starting the month of December off with some open space will ease the overwhelm that can happen once the packages have all been unwrapped.
Or plan ahead by having a conversation that could enable you to shift the focus from giving gifts that take up space to some great alternatives- tickets or certificates for a special experience together or gifts of service- weekly cookie delivery or 3 mos. of snow-shoveling . Be creative & find ways to decrease the number of items coming in.