Wow, you have such amazing art. I don't necessarily have solid ideas but I have ideas on how to get ideas.
1. make stuff in MS paint. Backgrounds help me think of ideas and once you master MS paint you have pretty much mastered art. Using MS paint is hard but also inspires me to create better drawings in other programs.
2. Read books. Reading books may inspire you to draw scenes from books or even create new ideas.
3. Looks at other art. Looking at other artists art may inspire you. I'm not saying copy art but just look at it.
4. Improve on old/ bad art. I'm not saying your art is bad but there is always room for improvement!
Fire Emblem's Inigo dancing over his mother's grave in sombre silence. Ven on Disney Town's race track having the time of his life. Aqua on the Dark Margin, holding her Wayfinder. Axel being Axel. Setting DiZ's basement on fire, a rendition of the "Fine, I see how it is..." line, his death... him setting an ice cream stick on fire because why not? An Absol being pretty.