Everyone loves the little "friendship" bracelets. The simplicity makes them fast and easy to make. You can grab lots of vibrant colors to highlight summer tans and clothes. It is also a great craft to keep the kids busy on a rainy day. All you need is some embroidery floss and a clipboard.
Many of the bracelets are macrame and require knotting. I like this young girl's different style of weaving:
For the more traditional knotting there are several videos including a set of 4 steps with great detail. This link is a short and quick video that shows the basic knotting technique: