What should I name my cat? It's Grey with white stripes. It's also a runt. Any Suggestions?

My baby kitten is almost 3 weekes old. He's grey with white stripes. He's also the runt. So far he kinda just sleeps or crawls up my arm when I hold him. He doesn't do much but that's probably cause he's young. I can't think of any names. Any Suggestrions?