DIY Balloon Pump (IMAGE) RMIT University Caption The simple DIY pump made from a balloon and stockings. Credit RMIT University and the Walter and Eliza Hall Institute of Medical Research Usage Restrictions Credit: RMIT University and the Walter and Eliza Hall Institute License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.