Cracked LCD (XL)

The line patterns that appear when you throw your controller at your TV to tell you that it's time to spend a lot of money. Or maybe a commentary on the absolute state of the logistics industry viz. their handling of expensive big boxes full of delicate electronics.

Obviously this is rather unpredictable and glitchy, so it will require quite a few attempts to get anything useful out of it. The results won't be very "realistic" until you go for for completely "abstract" (then it just looks like a completely busted screen), but it does provide quite a neat glitch effect when combined with more concrete prompts.