Peanut Butter and Jelly sandwiches do not need refrigerated.
The peanut butter and Jelly sandwiches are safe to keep out at room temperature all day if you want too.
So you can make a few peanut butter and jelly sandwiches and keep them out to eat as long as you wrap the peanut butter and jelly sandwiches in plastic to avoid the bread drying out.
You can also leave the peanut butter and jelly sandwiches in a lunch box all day and they will be fine.
However the peanut butter and jelly sandwiches will be eaten up within a few hours or so of packing them in a lunch box when lunch comes around.
I send my kids peanut butter and jelly sandwiches in their lunch boxes to school and they love them and they last until lunch time.
I used to take peanut butter and jelly sandwiches to school as well and they were never refrigerated.