There's a book called "The Bathroom Idea Book" from Taunton press that has all sorts of interesting ideas that others have done; Taunton's books have consistently really impressed me and I don't say that about many printed materials.
Warning: their publications may cause you really cool inspirations that result in "mission creep" that you may likely never regret on a functional and aesthetic level, but which can give your budget a real bashing...
http://www.tauntonstore.com/home-design/kitchen-bath.html?cat=474
I did a total gut to the frame and rebuild back out of two rooms that became 1st and 2nd floor bathrooms (to replace the former bad-1970s one and only first floor bath- which is now destined to someday be gutted to become a pantry/ laundry room when my budget and stamina recover more fully from the massive bath project...) in my pre-civil war VT house about half a dozen years ago.
Use a REALLY good moisture barrier behind the walls if you are opening up walls and have a chance to do so. I like Tu-Tuf crosslaminate poly- way more robust than the usual poly film.
I used Fantech inline fans and have been nothing but highly pleased- they can move a LOT of air with so little noise you may forget to turn them off- quality is in a different universe than the tinny noisy builder-grade/ Homecheapo bath fans. I mounted both fans in the attic and used 4 inch PVC for a vertical run through wall cavities from the first floor bath to the attic- easier and more robust than ductwork. Fantech also makes tasteful understated grilles. HVACquick.com [or something like that] was an excellent source not only for the fans and grilles, but also for the flexible insulated ducting that I used between the fans and the outlet fittings that went out through the gable end attic wall- low prices, big in-stock inventory, modest shipping cost, and quick arrival for stuff.
Chicago faucets make exceptionally high quality fixtures that do live up to their motto "outlast the building" and will free you from ever again dealing with the dripping, messing with replacement cartridges, etc. that befalls most faucets at the 5-10 year mark. Their products aimed at the residential market are insanely expensive... BUT if you dig into their commercial line, you will find nearly identical items with slightly less fancy handles (suits me fine) at prices that are only a modest increment above ordinary grade consumer/ builder stuff. FaucetDepot.com was a good source for me, after I'd dug around on ChicagoFaucets' website to locate the "plain dress" commercial fixtures so that I could identify and order those.
I went by the "anything worth doing is worth overdoing" view- but I know that as long as I stay in the house (which as far as I can see/hope may be decades or 'til the end of my days) I won't have to touch any of this ever again... which is good, as lots of the rest of the house needs attention that can keep me more than busy...