I would not give her a Voyager gift. When I went to the Kate Mulgrew con a few people gave her Australian souvenirs. I would pick something like that, only really classy. The Trek stars really light up if you ask them about something they did or are planning to do OTHER than Star Trek.
First Class is a rip off Jetfire! These huge jumbos crossing the Pacific are very comfortable anyway.
Also.. lottery tickets? Become an ebay mogul? Horribly irresponsible credit card misuse?