Valentine's day crochet rose pin - *Inspiration* there's no pattern but there are SOOO many crochet flower patterns out there. You could make any of them into pins as a cute little gift for teachers, friends, etc.
Crocheted red cotton flower elastic hair ties - Set of 2
Small Rosette Crochet Flower Pattern via Jenn Ozkan. This is my go to crochet flower pattern, because it is easy and the pattern can easily be converted to a larger fuller flower. Used this pattern for wristlets
Beautiful Crochet Flower Tutorial from: Olav World