The Workbench becomes available at level 14, and is needed to produce threads, big baskets, shuttles, wooden boxes, sets of colors, wooden chutes, kites, barrels, stained glass, and target boards. It can be upgraded three times using a variety of items.
To learn more about upgrading the Workbench, check out the guides in our official Facebook group and Discord channel.
And to find out more about crafting, head to the Crafted Items section for more information.