The Dwarf Gadget is an artifact that can be found by digging up sand in The Mines. You can also find it inside Magma or Omni Geodes.
The selling price is 200g.
You can donate this item to the Museum to increase your total amount of donations. If you have donated the Dwarf Gadget, Rare Disc, and at least 11 artifacts, you will be rewarded with the ‘Burnt Offering’ painting.