Make popular and cheaply available ($1 - $3) a simple device that can plug into a port and pound the device through all the modes, blowing it up in spectacular

Make popular and cheaply available ($1 - $3) a simple device that can plug into a port and pound the device through all the modes, blowing it up in spectacular fashion if it's not compliant. Make them ubiquitous enough that mischievous sorts are prone to quickly destroy any device put on the market with flawed ports. Note: There is probably an ethical issue with this, but it doesn't jump out at me.