You've got to check this out. Super easy tutorial for making friendship bracelets that anyone can make - even young children. Free bracelet template included to get you started.
DIY Heart Knot DIY Projects / http://UsefulDIY.com on imgfave. You could make this a necklace by getting some bulk chain, doing the knot with the chain, and then attaching a clasp! You could add beads too!
making a french sennit tutorial
Sweet&Knit: Cómo hacer un Collar de Trapillo con un telar casero