ideas for applications

good evenings fellow redditors ,i am new to software developent i would like to create some applications in C# ,or androis mostly for my own benefit ,in other words that the work i will put on will help me develop as a developer and maybe in the future i can put them in my CV ,but the thing is i dont have any ideas ,so waht i am asking is if anyone can give me some ideas for projects ,

and of course i dont expect to give me ideas how to make application that i can get money form 😛