Knitting Needle Wall Organizer

My kids do a lot of crochet and knitting crafts and therefore acquired plenty of needles, that needed an organizer. This organizer will hold several pairs of 10mm, 9mm, 8mm, 7mm, 6.5mm, 6mm, 5,5mm, 5mm, 4.5mm, 4mm, and 3.5mm needles. Assembly should be pretty obvious as the pieces slot together, recommend hang it so that gravity won't disassemble it.