Topaz: Stroke to win 50e. Limited to 5 per day. 

Xanthos: Stroke to gain 10 energy points for your most recently born horse and a random chance at a Horn of Plenty. Limited to 5 per day.

Frost: Defrost for a chance to win a Hypno's Blanket. Limited to 1 per day.

Safe Haven: In your office under the Safe Haven tab, stroke a horse once per day for rewards.