Depends how you're travelling...

On a plane on a *domestic* flight, it's easy to just put your herbs in a bag and stuff it in your pants. Unless you're acting way to suspiciously, you should pass by security with nary a blank. HOWEVER...this is NEVER recommended for *international* flights...the dogs, they will getcha!

When driving, just keep it out of sight. I tend to put mine in the center console or in the space beneath the arm rest. Out of sight, out of mind.

The most problems I've encountered is when walking, like with a backpack. Just keep your herb in a REAL good container capable of holding the smell. It is quite an odd situation to open your knapsack on a public bus, letting the smell of fresh marijuana loose, as you try to 'play along' as other passengers are wondering what that smell is and where is it coming from.