Dig up artifact spots in the Mountain area, especially near the Carpenter’s Shop and Mines
Kill Pepper Rex enemies in the Skull Cavern
Fish in the Mountain Lake or the Secret Woods pond using a fishing rod
Open artifact troves
Check treasure rooms in the Skull Cavern
Use a Dinosaur Mayonnaise machine after getting a Dino Egg to hatch a Dinosaur
Increase luck and use Luck-boosting food to improve drop chances
Repeatedly search the Prehistoric floors in the Skull Cavern
Use the Excavator profession to increase geode and artifact finds
Trade with the Traveling Cart if it offers one