An extension chord with extra plugs and USBs, anker makes a good one. Another option is a battery pack to recharge electronics without a plug ( Again Anker is a good brand but there are many others).
Another idea for college students or anyone with a car is a battery pack that will jump a car without using jumper cables. I have one that is pink and purple and have suprised a few people that were stranded with how well it worked.