I nanny for a little boy that is 22 months old. We went to the Children's Museum yesterday and I observed what toys he gravitated towards.
At his house he has many gender neutral toys that are completely developmentally related, color neutral, etc. For Christmas, he received a few trucks and tractors but not many. He received a doll because his mom is expecting a baby girl. He also has a football and a couple of other balls in bright colors. He loves sweeping and vacuuming and now has ones his own size.
At the museum, he played on the little trucks, with the dogs and with the footballs. He didn't want to play with the volleyballs or get on the big tractor (similar to the little one he has at home). When I tried to lead him to the dolls and give him one to hold, he walked away. He did big doll house that was in the glass case.
It was interesting to see him gravitate towards the things he knows and away from the things he didn't. He also went away from the toys he didn't like at home.