A couple of summers ago, I was flying to France to stay with friends who had visited San Francisco in the past and fell in love with our foggy city. I thought I had found the perfect hospitality gift when I bought a fog globe featuring the Golden Gate Bridge. A fog globe is similar to a snow globe, but when you shake it up, instead of snow falling, the bridge disappears in gray fog. Because it was breakable, I carefully packed the globe in a carry-on bag, and that was my big mistake. It never occurred to me that airport security (TSA) would confiscate the gift because it contained too much liquid. I have since learned that fog and snow globes about the size of a tennis ball are allowed if they can fit in a clear, Read more