This basic heart starts with a magic ring and is worked in two rounds, using a variety of stitches. I think cotton works very well with this kind of pattern, but you can use any kind of yarn in any weight you like!
Purl Bee :: DIY felt valentine pin - I made one in 15 minutes and that was taking my time. Easy, fun and looked great. Works with acrylic felt too, although might not look as polished. These could be neat on a baby mobile or a garland.
This is a *Woven* Heart (Reverse Appliqué?) -- with hand-sewn stitching encasing & surrounding-- for a sweet finishing touch. The Heart is on the Flap of a Hand-Made 'Cosmetic Pouch'. Beautifully done, Great Ideas!