You know what I haven't done up until now? Boob crushing. Normally I'm more of a butt guy, but breasts are kind of like butt cheeks for the female's upper body.
...Wait that came out wrong. Anywho, here's another one of Sapphie's fantasies involving her crush on Ruby. One where they're anthropomorphized and the spaniel herself being as teeny as a bug. So much so that she's small enough to fit in between the bunny's boobs.