This is a great trick, but as the name implies, you'll need a table (Don't carry a table around just for this trick) and a coin. Knock the coin on a table talking about a soft spot or invisible hole. Say you've found it and as you say, fake transferr to right hand while it remains in left hand. Left hand goes under the table as right hand taps few times, the left taps the coin too to make the sound. When u vanish it, make a sliding sound, by pulling both hands closer to you sliding on the table, and end with a tap then let the right hand open and show the coin has gone thru.