30. Origami
When you're good with your hands and are looking for something to boost your focus and creativity, the origami is one of the best hobbies you should do. Origami is an ancient type of art, a very low hobby and very rewarding, too.
You will be able to make some of the most incredible small paper decorations once you learn all the tricks. It may look complicated and like something unattainable, but with hard work and hacks, you'll start enjoying this new hobby idea.