The best method I've heard here was to be at a busy table and stand with a coin cup. Drop the little beasties (stacks of 20!) in the cup and wander off. Also...

...make sure Talulah Bankhead is playing at your table as she will surely be distraction. See the guy with the coin cup? Me neither, now you're catching on!

Also consider hiding them in your hair while two grade B actors annoy the table. This dealer actually has a Blazing 7's slot machine hidden in that beehive!