This is the list of phones +OnePlus will accept you smashing in order to get a $1 phone from them. The original HTC One is on there twice for whatever reason, but many of these phones have sealed backs so you can't remove the battery before smashing it. Remember this guy? Samsung Galaxy S5 Hammer Smash Fail = Battery Explosion

Every one of these phones could be sold on +Swappa for a fair bit of coin, or donated to Cell Phones for Soldiers (http://www.cellphonesforsoldiers.com/), or even just left plugged in somewhere in your house running HTC's Power To Give service (http://www.htc.com/www/go/power-to-give/). 
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