"Customizing" a jump drive with a shotgun shell casing is a bit much.
Some of the other options include gum wrappers and erasers, you know, for the gum chewing crowd that make lots of mistakes.
Who the hell cares what their drives look like? No really, have you ever looked at a jump drive and thought:
"Damn, I wish there were some way I could dress that thing up. Hey wait, I know-a shotgun shell casing!" And then you're all like:
"Aw crap, all I have is this stupid gum wrapper and an eraser." Then, inspiration presumably strikes...oh you know it doesn't. This is asinine. Buy a proper gift if you can't make something decent. Cheap bastards.