Lulu is amazing, the Scoop vibrator is really good and I am getting ready to try one of the anal products to see if they work as well as the ones made for G-spot stimulation. I will keep you informed.

Just about anything that's curved enough to hit the P-spot will work for the G-spot, as well. Smaller diameter toys should work out all right, depending on how flexible they are and how much pressure you want on your G-spot.

I haven't technically ever gotten an anal toy to use vaginally, but there's two I have that kind of count. The Small Silk is such a slender dildo that most people think of it as an anal toy. It's very flexible, though, so you won't get a whole lot of pressure. The other is the Bent Graduate, which is listed as a G-spot toy here, but I've seen it marketed as a prostate toy on other sites. It's a little over an inch, and glass can be intimidating if you've never tried it, but speaking as somebody with a fairly small build I can honestly say I've never had any trouble with it, and it's one of my favorite toys overall.

Nexus makes some great gspot/pspot toys with really intense vibes, but still nice and slim. Check them out.