Getting Marker Off Of White iPhone?

My white iPhone cracked in the front (top right hand corner) and I colored in the cracks with washable Crayola markers. How do I get it off? I know you can get it out with hand sanitizer and/or rubbing alcohol but I ran out and don't have time to go buy some. What can I use?

Use soap and water or wait til morning and if you got a buck stop in at your 99 cent store and buy some sanitizer buy a phone case that will withstand a drop