More kink stuff, collars, gags, used condoms and lewd clothes, maybe tattoos or even further with specific niche kinks, ABDL, Zoophilla and watersports come to mind
Personally the thing i want MOST is training, or some way to customize her personality. Loyal slave? Overprotective girl friend? Maybe even training kinks like pet play, exhibitionism etc.
of course its your choice, im just spitballing, i appreciate all your work regardless of what you do