What are some things I could draw with some sharpies?

So, I'm going somewhere tonight and I got a note book I use to doodle/draw with sharpies and I'm all out of ideas. I'm OK at drawing but I'd like some ideas to doodle/draw tonight. I already know how to write in bubble's and that's really fun, and I don't wanna do graffiti or writing words. Sharpie marker colors I got- Black, Red, Green, Lite Green (Publix marker), Red, Yellow (Highlighter). I need a ton of idea's to doodle / draw with. best answer 10 points! "Also I got a reg pen :D"