We had wax paper over our sandwiches in brown bags with what ever else would fit in there. There was NO Kenyan Turd back then screwing up the place.
Worked for me too. I thought kids weren't allowed to bring lunches from home anymore. Particularly since most of the kids get free breakfast and lunch now anyway.
The brown paper bag was reused from a store purchase. After lunch it was folded up and brought home in our back pocket to be reused again.
The wax paper was reused to polish the steel slide during daily recess.
Kids in the local schools now have no slides. There are also no monkey bars, swings or hand powered merry-go-rounds. (TOO DANGEROUS!)
They also only get one 15-minute recess a week!