This is more of a question for those who pump at work. I'm starting an internship soon and I'm wondering the best way to pack up my pumping supplies and the rest of the stuff I'll need without feeling like I'm lugging around so much stuff. I have a PISA Backpack, so obviously be bringing the backpack with me. I'm just wondering if I should try to fit my purse items in the backpack, so I have less stuff to carry, or if it's a better idea to carry a seperate purse. I'll have to bring a couple textbooks with me, so I'm just not sure the best way to go. Also, are there any other things I need to bring with me for pumping? (other than the pump, bottles, freezer pack, etc) I've only ever pumped at home so I want to make sure I have everything.