Hello
There are many diploma courses available.
Some of them are

1. Information Technology
2. Polytechnic
3. Event management
4. Hardware engineering
5. Hardware networking
6. Pharmacy
7. Software programming
8. Carpenter
9. Health sanitary inspector
10. Industrial safety
11. Automobile engineering

There are many more. Find one which is interesting for you or you feel like suitable for you. You can search about the courses individually in Google and decide what to opt for.
Hope it helps!