Ok, so I just learned how to frag some stuff (thanks to tazzy!) My question is, where would you get these plugs to glue them to? Could you just go to walmart or a craft place and get cheap shells, boil them, and what not, and glue the frags to there? I know tazzy uses shells, but i'm just curious what other things could be used. I thought I heard someone say buttons? that would seem kinda weird to me... wouldn't the salt eat at the button or something? Just curious.