Bag

You'll want to carry as much ore as possible each time you go down into the mine. Upgrading your bag will help you carry more ore, gems, and items.

The tiny bag you start with will hold 10 items in total. That is enough to start with, but soon you'll probably want to bring up more of what you find in the mines to sell for more profit! The cheapest upgrade costs only 100 coins, but it will add an additional 5 items to your carrying limit, increasing your total to 15 items.

You can also get a Pack Snail to increase your item limit even more. Each time your Pack Snail levels up, it adds 1 extra spot to your carrying limit. That can be a nice addition to a large backpack.

After you buy the Miner's Backpack, other backpack upgrades will become available that help take advantage of magical dimensional space to store more things in your backpack. You'll need to find special items though to build these space saving backpacks...