We like the Water Missile link
- but technically it's not a great anal vibe because it doesn't have an adequate 'safety flare'. I also have a vibrating anal plug that I don't see on the site anymore - but at 1.5" it takes a little patience for a beginner (like me). It's similar to this one link
I'd love to try something like the Lelo Billy link
- but in my opinion it's way over priced.