Finding all the items for the museum is quite a task. You will find most of them by digging and a few by mining. Gladly since update #2 we have an icon over them in your inventory so you know which items can be donated to the museum.
Some recommendations:
- Wait with grinding for all those items till you have the master shovel and the master pickaxe.
- Don't throw double items away, as some are required for quests.
- If you still have people who aren't friends level 5, take them with you on this grind.
Item 01: Amethyst - Mining in the swamp area
Item 02: Emerald - Mining in the forest area
Item 03: Diamond - mining in the snow area
Item 04: Ancient Flute - Digging in the forest area
Item 05: Medallion of Honourableness - Mining in the forest area
Item 06: The Blazing Amulet - Snow area but unsure if it was with digging or mining.
Item 07: The Dracorex Scroll - In the sand in the desert area and possible also in the beach area
Item 08: Ruby - Mining in the mountain area
Item 09: Slicebringer - Digging in the mountain area
Item 10: The Graciliceratops Diary - Digging in the meadows
Item 11: The Sharpcrest Totem - digging in the desert area/ Digging moss in the swamp area
Item 12: The Unknowable Totem - Digging in the beach area
Item 13: Sapphire - Mining in the meadows area
Item 14: Bismuth - Mining in the desert area
Item 15: Spikeneck Vase - Digging in desert area and snow area
Item 16: Bird Fossil - digging in desert area
Item 17: Fish Fossil - digging in the beach area
Item 18: Reptile Fossil - Digging moss in the swamp area
Item 19: Topaz - Mining in the beach area
Item 20: Mammal Fossil - digging in the snow area
Item 21: Plant Fossil - Digging in the mountain area
Item 22: Pearl - Found lying around or by digging in the beach area
Item 23: Petrified Wood - Digging in the forest area
All credit for this guide goes to missiloon on steam. Putting this here so people don't have to search for a guide like I did. Go check out their post for pictures: https://steamcommunity.com/sharedfiles/filedetails/?id=33548...