A few months ago I came across a Manzanita Tree that was created by combining multiple smaller Manzanita Branches into one grand display. Rather than clustering branches together at the base as shown here or here, the Manzanita Branches were attached to each other to build the Manzanita Tree, producing something greater than the sum of its parts.
We created a quick-and-easy version by using nothing more than the 18-24" Sandblasted Manzanita Branches and our equivalent of duct tape - cable ties. Manzanita Branches are relatively light and exceptionally strong, so you can really pile the branches up without worrying about them drooping or breaking. Using 5 branches, we we created a display over three feet tall, almost as wide, and exceptionally full.
We used two or so cable ties to attach each branch, and pulled them tight with pliers. The translucent white cable ties blend in nicely with the light-colored Manzanita Branches.
The slightly rough sandblasted finish of the branches helps keep the branches from moving. We also tried this with Natural Manzanita Branches, but the smooth bark on those allows them to wiggle a little too much.