>A nice book that has a bunch of concept art or just some cool images of the ships or maybe something like an encyclopedia
https://www.amazon.com/dp/161655701X/
They actually had one (well, more than one, I own several) but they're out of print. Although you can buy ebook versions.
As a birthday gift I would go with AUR as it can be used for mementos (stuff that doesn't help you, but you can have and remember it was a gift from someone).
Though if you want to give something more useful, then you can buy game time or PLEX (it's mostly sold for in game money, but can be used as game time as your self too).
Or you can look here for real live items: http://store.eve.com (also there are few EVE books in Amazon this for example).