I purchased a target "my 1st quilt" for DD's cot. (more for looking pretty) I havent used in with her in it cos she is only 9 1/2 months. I started using them when DS was old enough to pul up his own blankets and we moved to the toddler bed. He started sleeping better but not sure if it was a combo of new room. bed and things also i like sheet sets. that way you have the top sheet when you want to use them. Also preschools use sheet sets on their beds so now i use all the cot sheets for DS to take to school when he goes.