Effect - You pass a coin from your hand into a closed tic-tac box in an INSTANT! THEN you take a second tic-tac box and again in an INSTANT you pass the coin from the first box to the second.

Easy to do and extremely VISUAL!

Passing a coin through a solid object is great, but it usually stops there. With THR-U you pass a coin through a solid object, then make it pass from that solid object into another.