We've had a family tradition since the grandkids were toddlers. I would chase them around as the Hug Monster and when I caught them, I would pick them up and give them a big hug. It was something they all thoroughly enjoyed.
When our grandson, Steven, was in the first grade, I was working nights so I had time to pick him up after school. I would wait outside the classroom door with the other parents until the bell rang.
When the bell rang, Steven would take off running and I would chase him down saying, "The Hug Monster is going to get you." When I caught him, I would pick him up and give him the big hug he was expecting.
This went on every day for a couple of weeks. One day after chasing and catching Steven, I looked back and saw a half-dozen little 6 year old boys lined up by the classroom door waiting for their turn to get "Hug Monstered".