Aludra and her dragons would require some pretty good mechanical engineering skills.
Also, whoever it was that made the steam wagon at Rand's school.
Moleman
Re: Favourite scenes from the series
Brand new member to tarvalon.net, here, but a long-time fan of the series (I picked up EOTW in 1998, and have posted previously [though infrequently] on the old usenet group and at tor.com). I saw this and thought I'd register with your fine site and share...