Come on now, you don't lack that much imagination do you?
Already we're programming these things into robots that are gaining dexterity and ability to move in the world. Hooking them up to mills and machines that produce things. Integrating them into weapons of war, etc.
Next, the current LLMs are just software applications that can run on any compatible machine. Note that any just does not include your, but every compatible machine.
The last failure of imagination when considering risk is form factor. You have 2 pounds of mush between your ears that probably 80% of is dedicated to keeping itself alive and this runs on 20 or so watts. What is the minimum size and power form factor capable of emulating something on the scale of human intelligence? In your mind this seems to be something the size of an ENIAC room. For me this is something the size and power factor of a cellphone in some future date. Could you imagine turning off all cellphones? Would you even know where they are?
The pace of this technology is so fast that it’s hard to keep up. LLMs have moved beyond computers in a box and they’ve been fused with other types of AI. Robots that can identify objects, learn to walk and manipulate objects, follow natural language commands and communicate with you are not something we are waiting on.