Not sure within the US, from what I have seen for the Beer swaps it seems doubtful they do, but BIL has advised on security matters since Sept 11, and coming into US borders most packages are screened with large X ray like machines looking for "items" that could be explosives. Most of that has a liquid component, so bottles of booze would likely be noted. Whether or not if they would just say, oh, thats just a fifth of booze, and let it fly, or say wanna see what we are drinking tonight, I can't say?

I think Jan has it, do a Booze related swap of a woodworking project, that can hold, or serve a bottle of Booze, but have the recipient place the booze into it, so no one gets busted, or their item snagged at the border. Something like the item Pottz got from Dave, sans the hooch. 

I can't see any border getting weird about wooden projects, as long as it was kiln dried, and didn't contain any pest related problems. IE: Ash and the Ash borer when it was first out, whole logs, and bark related items were a no no, but items of kiln dried Ash were ok. I suppose you would have to research your own country, and report if there were any known no no's. Plenty of wooden items traverse the globe daily though.