Artificer's Tools (5e Equipment)
From D&D Wiki
This kit contains all the tools, such as wrenches, bolts, and containment crystals, needed to create automatons and clockwork. It does not include scrap metal and other raw materials, which you can buy for 10 gp a pound. These tools are not necessary for a rock gnome to use its special ability, but allow the rock gnome to build the toy twice as fast. They are also not tinker's tools. Tinker's tools are raw materials and the tools needed to make simple clockwork invention's, like the rock gnome's special ability, or metal objects, like spoons or pots. Artificer's tools, on the other hand, are necessary for more complex inventions, like automatic crossbows or automatons.
Cost: 100 gp
Weight: 10 pounds