iPods are great for playing, but there can be violent games, inappropriate games, and most games have "In app purchases" which means that you may need to pay for stuff in one app. The app for stuff such as Internet Explorer and Firefox is this app called "Safari". The problem is that you can't do anything on it that uses stuff such as Adobe Flash, Unity, etc.
You can listen to your favourite music, so it can also be great. They also have educational games, which is good for kids.