Happy Valentine’s Day! These hearts are about the easiest I can think up! I used SK2P for a double decrease but you can use any double decrease you’re comfortable with. Any yarn will work; blocking is optional. It took about 9 yards of yarn and half an hour to knit a 31-stitch heart. Yay for easy!
The red hearts started with 31 stitches and used Wool Ease Recycled yarn. The pink heart started with 37 stitches and used Lion Brand 24/7 yarn.

Skills needed: cast on, knit, SK2P and bind off in knit stitch.

Gauge is not important in this pattern. Any yarn/thread will work.