Think about space and time too. A large jigsaw needs a table or board where it can stay out for days, which is not always practical. Puzzles can be a calming, screen-free way to spend a wet afternoon, and working on one together is a quiet way for a family to sit down side by side without a fixed finish time.
Stocking fillers are where the smaller puzzles shine. Self-contained games such as the Genius Square, along with pocket brain teasers, drop neatly into a stocking and give someone a challenge for the quiet bit of the morning. For children, a game matched to their age, from Bee Genius for the little ones to WordSnap XL for older siblings, tends to get more play than yet another plastic toy.
Christmas is when board games and puzzles earn their keep. With the family together and a stretch of quiet days, a good game gets everyone off their phones and round the table, from the youngest cousin to the grandparents. The trick is having a mix ready: a quick game for the afternoon lull, a party game for the evening and a puzzle for someone who wants a quiet corner.
Brain teaser puzzles for adults come in a few broad styles. There are mechanical puzzles, such as interlocking metal or wooden pieces you have to take apart and put back together, logic puzzles that ask you to work out a single correct arrangement, and spatial puzzles where you fit shapes into a fixed space. Knowing which type someone enjoys makes it much easier to choose one they will actually sit down with.
Because it runs on luck rather than skill, the game levels the field across ages. A grandparent, a parent and a small child can all play the same round, and the youngest is just as likely to reach the top first. That makes it a reliable choice for family gatherings, and a gentle, low-pressure way to get the youngest players involved in a game night.
For the big family session, party and bluffing games carry the day. The Traitors board game and card game, both available from The Happy puzzle games for adults Company, work well with a larger group because they turn on reading each other and keeping a straight face, which suits the after-dinner mood. Keep one of these back for the moment when everyone is round the table and looking for something to do together.