Sure! Here are the activities ranked from shortest to longest time to achieve mastery (although keep in mind that this can vary greatly depending on the individual and their level of dedication):

1. Electronics tinkering: Electronics can be learned relatively quickly with practice, and there is a wealth of information available online for self-study.

2. Home improvement: Basic home repairs and projects can be learned quickly with practice, and there are many resources available to help you improve your skills.

3. Gardening: Although it can take some time to learn about soil conditions, plant care, and pest control, gardening is a rewarding hobby that can be learned relatively quickly.

4. Woodworking: Learning to work with wood can take some time to master, but it is a rewarding hobby that allows you to create beautiful and functional objects.

5. Metalworking: Metalworking can take several years to master, as it involves working with dangerous machinery and requires a lot of skill and precision.

6. Car restoration: Restoring classic cars can take several years to master, as it involves a lot of mechanical knowledge and experience.

Regarding physical strength-focused hobbies, here are a few suggestions:

1. Rock climbing: This hobby requires a lot of physical strength and endurance, and it can also be a great mental challenge as you try to navigate difficult routes.

2. Martial arts: Martial arts such as karate or judo can be a great way to build strength and improve your balance and coordination.

3. Parkour: This sport involves moving through obstacles and obstacles as quickly and efficiently as possible, and it requires a lot of physical strength and agility.

4. Weightlifting: Lifting weights can be a great way to build muscle and improve your overall fitness.

5. Yoga: Although it may not seem like a physically demanding hobby, yoga requires a lot of strength and flexibility and can be a great way to improve your overall fitness.
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