this lamp can easily be made at home with some old broom sticks and glue.

here's how i made it:

Step 1: Cut the Sticks

first, you need some sticks( i got them from an old broken broom) of almost same thickness.

cut them as per your design.

for my design i had to cut:
for the triangular part-
3 sticks - 7 inches each
3 sticks - 6.5 " "
3 sticks - 6.0 " "
3 sticks - 5.5 " "
3 sticks - 5.0 " "
3 sticks - 4.5 " "
3 sticks - 4.0 " "
3 sticks - 3.5 " "
3 sticks - 3.0 " "
3 sticks - 2.5 " "
3 sticks - 2.0 " "
3 sticks - 1.5 " "

for square part-

28 sticks- 5 inches each

Step 2: Glue the Sticks

this step needs patience. you need to carefully put your sticks on each other and glue them descending from longest sticks to shortest.

first make largest triangle using longest sticks. and then the smaller ones and so on.

when your trianglular part is ready let it dry for at least 6 hours. and start working on the square part.

when both the parts are dry glue them to each other and let dry for some time untill it is fully fixed and dry.. it takes almost 4 to 5 hours.