A simple but useful technique if you are limited in your piece selection. Depending on the mold of your pieces you can find that the symmetry doesn't line up 100%. This can result in one of the plates with handles not staying flush with the plate at the bottom without additional force.
To find the different pieces needed for this technique you can search LEGO's online Pick-a-Brick for the design ID's. We link other market places directly on each individual piece page, which you can find below.
Here's a better look at the construction.