This glitch is likely to have a short shelf life but I have gotten it to work many times and has not yet been patched. This method will allow you to get unlimited free lunch boxes in fallout shelter.
- Start up the game and enter the vault for which you want to get the lunch boxes.
- Press the PS button and go to the time/date settings and manually set the date to 1 day in the future.
- Go back to the game and you will have gotten tomorrow’s daily bonus. The final bonus is a lunch box.
- Jumping forward 7 days at a time works but it seems to make things glitchy. Going one day at a time has not glitched for me.
You can repeat this over and over. It will also get you lots of other bonuses like quests and rooms completing faster