Creating functionalities in custom nodes

As internal project I need to create custom nodes can you suggest few functionalites to create using custom node

You should create the custom nodes your internal project requires. We don't know anything about your project, so I'm not sure what sort of suggestions you were looking for.

@knolleary i need to create any type of custom node like few functions provided in node red pallete like csv file reading.

This sounds like an assignment from a course or some other type of assessment.

What ideas have you come up with for yourself?

i think should start with providing looping functionalities like for loop and while loop etc can you suggest some

Please check before reinventing something unless it’s just for an intellectual exercise

@dceejay suggest me something like for loop switch etc.

well this for starters