For non-new players, Thorn Drills are the best drills to use to level your character between LV 1~10 and Titanium Drills are the best drills to use to level your character between LV 10~20. You cannot buy them in shops, however, there may be a few people selling them in their own personal shops.
If you're drilling in Beach Field, you can do the Sandman quest. The 5th time you might get a Pocket Pouch and the 7th time you'll get a Balloon.
If you're drilling in Beach Field, you can do the BunnyMaid Quest. The 10th time you'll get a UFO pet/
Doing Mermaid Marine's Quest 5 times will get you an Octopus Hat.
Doing Trinnie's Quest 5 times will get you a Knee Pad.
Doing Life Gaurd Dean's Quest 5 times might get you a Life Saver's Jacket
Doing Winnie's Quest 4 times might get you a Knee Pad, 5 times will get you a Health Amulet.
More information can be found at
http://mytrickster.net/forum/quest-g...est-guide.html.