Wood carvers sure are more rare these days, but they still exist. However they are probably very expensive too.
I'd love wood, too, it's a good idea actually. But since good wood is expensive, and the worker is expensive, I guess Larian will have to call for something a bit more manufactured.
After all, the mug and hoodie and stuff are ways of motivating people into higher pledges in order to get money for making the game, so while I expect a minimum quality, I also doubt the items are going to be of the finest polish. Especially if they have to mass produce them =) So probably no breathtaking design ( although simple, sober designs can be very nice too, those mugs in the Hobbit gif are perfect indeed ), no impressive materials ( cheap wood, not wood at all,... ), and not too big to reduce the material quantity needed and the costs.
But I still hope we'll get something at least functionnal and nice looking =)