Designed this portable sewing organizer. It has two sliding lids/doors - one on the top, and one on the side. The inside has spots for 2 large magnets for holding pins/needles - these magnets are directly over the side storage area, so extra pins/needles can be stored inside.

Will require 2x rods for the thread spools. I recommend printing them very slowly (I used 5 mm/s) in vase mode.

Magnets I used: https://www.amazon.com/gp/product/B093G7WYY9/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&th=1