My little one is about to become mobile and I really want to give her some quality playtime in a playpen. Do I need to buy a dedicated one or use her portacot. She sleeps in her portacot during the day, it has an extra foam matress to make it more comfortable. She likes sleeping in it, I don't want her thinking it is play time when I put her down for a nap, neither that it is nap time when I put her in to play. Has anyone had this problem? Should I buy a dedicated playpen? Can anyone give me any suggestions, or examples of what you have done? Thanks