List of ideas to make?

Indie hacking is not easy.

Looking for list of ideas to make like practice for me with following criteria.

For coding : Help me make projects faster

For marketing : I can practice marking too since my main advantage is coding.

For customer service : if I get any customer I could improve that.

Anyone have a list of good ideas ?

I saw list of ideas in indie hacker , for now I dont want to copy a big indie hacking and have a fight with them in X or Tweeter.