How to make thread holders-- to store 48 spools of thread

Materials  for two thread holders (each can store 24 threads):
1. one plank of wood (46*8.5 cm), and cut it into 2 pieces
2. round long wood stick (90cm)  4 pieces (with diameter 9 mm)
3. nails, a few
4.  2  hooks

Instrument:
saw, hammer, screw driver, white glue, hand drill