Christmas Tree (flat version)

They are two pieces. The width is 15 and 20cm. They could be glued to get different sizes. They have 3 hooks. Also two holes to pass the rope and be able to join all the pieces.
It can be mounted in several ways. In the example we have 8 pieces of 15cm and 10 pieces of 20cm.

the sequence is:

15(1) = 15
15(1) = 15
20(1) = 20
20(1) = 20
15(2) = 30
15(2) = 30
20(2) = 40
20(2) = 40
15(2)+20(1) = 45
20(3) = 60

In total we have 54 hooks.

It's reccomended the brim option to avoid