Last spring, a teacher was trashing some pieces of PVC and I rescued them from the garbage before they were taken to the dumpster. I believe the pieces were left by a previous teacher and used as a backdrop for a photo booth. I only had to purchase 2 more T connector joints for less than $3 to create this new double decker stand to hang both the gong and Thundersheet. Now that they are readily accessible, I'm certain I will find more ways to utilize them in lessons.
The pipes were 1 inch diameter (Measuring the opening of the pipe). I'm not sure how much this project would cost if you were to purchase all the materials yourself, but I'm certain it is much cheaper than any gong stand currently on the market. If you are not inclined to attempt this yourself, I'm sure you could ask for a parent volunteer to offer their skills. If you have any more questions about this project, I'd be happy to answer them!