WORKBOX is a playable word

workbox Scrabble® Dictionary

noun
pl. workboxes
a box for holding work instruments and materials
30 Playable Words can be made from "WORKBOX"
   2-Letter Words (6 found)
   3-Letter Words (13 found)
   4-Letter Words (8 found)
   5-Letter Words (2 found)
   7-Letter Words (1 found)