I'm torn between an ipod or ipad?

My husband asked me what I would like more an ipad or ipod. I'm a college student who commutes and has 2 hour breaks between cles. I need something to listen to music so I don't have to lug my computer around. Also need something to entertain myself with. But I think an ipad is bulky and I don't know what would benefit me better. Any advice is much appreciated