Dread Bun with just 1 elastic. Go to put your hair in a pony tail, but don't pull the hair all the way through, so it's doubled up with the ends hanging out. Then wrap the ends around the elastic and tuck them in wherever they reach around.
With one simple knot you can achieve this look. Dreadlocks are so much fun this way. You can do so much great updos with them. This is my client that came in for some dread maintenance 6 months after I made them. They are forming nicely!