The things you need:
1. Sticks or branches from trees
2. Leaves, twigs and hay
3. Thermacol sheet
4. Adhesive and scissors
5. Thread or Wool
6. Statues of baby Jesus or the Virgin Mary with child, etc.
Step 1: You need to take a 1 inch thick sheet of thermacol. Take four sticks and fix them on the corner of the thermacol sheet. Put some adhesive around each of the sticks to ensure that they are firm on the thermacol.
Step 2: With the help of thread make the framework for the roof as shown in the figure. Cover the roof with leaves, twigs and hay.
Step 3: Spread a layer of the adhesive on the sheet and cover it with leaves, hay and mud. Keep the statue of baby Jesus in it while placing others around him.
You can devise other innovative ways to make a crib in your house. Materials like wood, cotton, straw, cardboard etc. can be used. There is no limit but how you will do it, we will leave it to your imagination.