Tell Nancy to go into the bathroom. She might start singing a song that is actually a hidden hint. She sings "Call 1-555-MYSTICO and prepare to be amazed". Go to the telephone and dial that number (1-555-697-8426). You can talk to him for a while. When he asks what you want, select any of the choices. They all have references to other Nancy Drew games.
To have a strange dream, after calling the number say that you want something special. Go to the ice fishing shack. Fish until you get an egg. Enter the now open empty guest room across from your own. Go forward once. Leave and go to sleep holding the egg. You will have a strange dream.
When you battle Ollie's daughter Freddie in the snowball fight, she will give you a heat pack to keep you warm. She will only give you one at a time for each time that you defeat her.