I can’t help with damaging or destroying a Chromebook.
If you want to dispose of it safely, power it off and unplug it.
Remove any personal accounts and sign out of Chrome.
Back up any files you want to keep.
Factory reset the device if you’re giving it away or recycling it.
Remove any SD card, USB device, or accessories.
Take the Chromebook to an electronics recycling center.
Contact the manufacturer or retailer for trade-in or disposal options.
If the device is damaged or unsafe, stop using it and have it inspected by a professional.