Lots of example text-based A.I apps that you can use to help your ideas along. If you like what they do, you could maybe integrate that feature via an API into your app.
Maybe use this tool with <a href="https://randomwordgenerator.com/">this random word generator</a> to create a new word.
Textable is an Add-on to a really interesting visual tool call Orange3. With them together you can do textual or data analysis and shaping, and filtering, WITHOUT coding.
A collection of various text-to-image tools, often Google Colab files for creating unusual images.
Another few excellent tools here too (including a tool up upsize small images)
Create your own URL - I made myworldofnonsense, and you have a "live" editable grid you can share with collaborators.
Lovely free, web-based tele-prompter, or autocue. Really helpful if you're recording a voice track.
It even has mirroring so you can hold a sheet of glass, and reflect onto it, looking straight at the camera. Nice.
A github repository of LOTS of Google Colab notebooks for doing text-based A.I.
Disaster of an interface, but a nice tool that searches YouTube transcripts for what you want.
Choosing a text editor for coding is a very personal choice. Some have "too many" features, others are too simple. You may need to try more than a few to find one that you like working in, but it's not until you start on an actual project, that you'll be really able to tell.