Yeah, so far my $40 Kyocera Rise is fitting the bill just fine... in fact I'm quite surprised by just how much utility you can get from a phone with no phone service. The GPS stuff works, the map works, I can get internet anytime I'm near a public wifi obviously.. I actually forget I don't have 3g/4g service sometimes. Plus it never rings, it's like the perfect phone. Ok the screen resolution isn't great, battery life isn't superb... I'll refer you back to the $40 part.
But thanks for the tip on the new Nexus, they keep saying at the real job that they'll pop for a tablet some time, so maybe that's what I'll go for? We make Kindle Fire cases so I was looking hard at those, but they don't have bluetooth.