My ailing macbook has recently been having some heat issues (it frequently sounds like a jet engine!) so over the past few weeks I've saved toilet paper and paper towel tubes to create a stand for it. I realized that I final had collected enough tubes, so I stapled them together in a hexagonal fashion. The stand is quite sturdy and my macbook's fan has been blowing as much. Perhaps in the future I add horizontal holes on the stand to allow for more airflow.