Here's a little APE I made. It's basically an oscilloscope star-thingy but with a delay in the movement (it has a memory). One thing that's also cool is that I implemented anti-aliased line drawing, so the quality is much better than a regular Superscope.
If I ever get my compiler to work I'm going to make an anti-aliased superscope for those line-based effects
Feel free to use this if you like it.
(PS: I'm not going to improve this, it's a one-time thing)