Taking time to play with the kids is always a great idea. But what do you do that costs very little money and will cause hours of fun, and has nothing to do with the TV? A game full of creativity, an unlimited amount of players, and hinged on togetherness. I've come to call it the "Blind Drawing Game."
Pass out paper and writing utensils to everyone playing.
Turn your backs or go to separate places in the room so that nobody can see anybody else's paper.
Start by one player telling the other players what to draw. For example, draw a house in the middle of the paper, or, in the left-hand corner, draw a lighthouse. Each player get multiple turns to tell the group what to draw.
Convene together and everyone shows their picture. At the end of the game, everyone has the same picture drawn in their own way. The kids love seeing the different ways people drew things that they told you to draw. This teaches kids that there's not a specific way to do things. This can be fun for a long time.