Holly Hacks - peel away sandwich wrapper
Love this hack from lifehacker.
If you can't be bothered with plastic bags or you've run out give this a go.
All you need is two paper towels that are still connected. Lay them out and put the sandwich in the middle so that the tear off line goes right through the middle of the sandwich. Fold the bottom up, then that same section back the way it came. Now bring the upper portion all the way around the sandwich and fold the sides under.
When you want to eat it just peel off the top section at the tear off line