Suzanne: maybe this will help
Here is one idea https://www.hometalk.com/24866898/how-to-create-a-beautiful-outdoor-nativity-scene
A shed or Arch with a Star at the top and a Crib with a straw and a doll inside to represent Jesus. Maybe Lanterns either side and if you have any toy animals big enough place them around looking in..................
Build a structure with 3 sides and a top from pallet wood.
Then you can add a manger out of the wood.
Straw scattered about.
Then see if you can rummage up some robes, stuff them and put in a praying position. If you are really talented, you can add faces.