input question: Sew your own curtain.

output answer: First measure your window and decide what size curtain you would like. Pick the material you would like to make them out of and measure.

input question: To carve a bone into a naalbinding needle shape.

output answer: Cut the long bone half lengthwise. Remove the stuff inside. Carve the cut half into a flattened and tapered oval shape about 2-3 inches in length. Drill a hole at wider end.

input question: What is a creative way I can make a shelf cheaply?

output answer:
Use old drawers from old unused desks and chests, attach to the wall through the back of it.