For those who have had the misfortune of having a dice-thrower at the table, my friend Charles has a solution to that problem: oversized solid metal dice. His rule: you throw yours, I throw MINE at you. In an unrelated note, dice throwing incidents at our game store have dropped greatly in the past year...
My only superstition is for others to touch my dice without my permission. I used to think this was juvenile until my friend Jack aka the Master of "One", the Hitless Wonder, and the Pidgeon Slayer (old inside joke because whenever he fired nine times out of ten he missed and we used to say his arrows/bolts hit some passing pidgeon) use my dice when I had to miss a session. Ever sence then, those dice havent rolled squat. Now, touching my dice is done under penalty of pepper spray or stun gun.