I watch my cousins three kiddos on Thursdays and her youngest is 11 months. He takes a nap at the same time as Lilly and usually sleeps in the pack n play. Last week the pack n play was at grandmas so I thought I would try putting them in Lilly's crib. Well, needless to say, they really enjoyed it. Not only did they go right to sleep but when they woke up I heard them "talking". I went in to check on them and they were both sitting there just talking and playing. Very sweet!