Where to find a thesis topic?

1. Internet

1.1. Many times used topics around the world

1.2. Companies looking for thesis writers

2. Other connections

2.1. Family friends' companies

2.2. Friends' contacts

3. Courses

3.1. Interesting topics

3.2. Connection with actual companies

4. Hobbies

4.1. Connecting with a company & thesis

5. Previous work experience ?