Not an exhaustive list, but here are some fun things that my GF has done with me:
- Have me lick her pussy while she sexts with her bull or watches interracial porn.
- Keep my dick locked up, both when she is meeting up with a bull and on regular average days. She'll keep me locked up in bed and have me go down on her and use a vibrator on her while we watch interracial porn. She'll cum, but doesn't let me out to cum.
- Make me jerk off to cuckold porn and cum on myself while she lays next to me naked, not allowing me to touch her.
- Lots and lots of dirty talk. Before she had her first bull, it was all fantasy/hypothetical. Now she is very straightforward - "I wish my bull was here to fuck me. He is superior to you, your dick is pathetic compared to his. I'm sorry, but I'm just being honest." Most of the time, she just says it as a matter of fact and not to embellish just to turn me on (which, funny enough, makes it even hotter).