DIY Woven Friendship Bracelet Using a Circular Cardboard Loom. Very easy, cool jewelry craft for kids weaving a seven strand friendship bracelet. Tutorial from Michael Ann Made here. This might be a good summer craft for the older kids.
A rope bracelet - reminds me of making friendship bracelets back in the day. My right second toe used to go numb because I'd hook the end of the bracelet over it, and then knot embroidery floss for HOURS.