My most recent purchase was actually to replace a propagation tube that went crashing to the ground as a result of my own clumsiness. In fact, both fell to the ground, but only one of them broke. I've had two for ~1 year now, and not only are they a SUPER cute and clean decoration in my living room, but effective, as well. We'll be repainting our living room soon, and when I was replacing one of my propogation tubes, I also picked up a set of extra 3M wall stickers so that I could hang them back up as soon as the walls were repainted.
I enjoy having the propagation stations in my office, and the test tubes are light and the right size. given that it is a flag magnet on a round tube, you do have to be a bit mindful to handle it with care so the magnet doesn't shear sideways and lose the strength of the glue.
Ordered 2 of the test tubes. They add a simple yet elegant touch to my living space. The box was damaged during shipment and one of the tubes broke. Customer service was very attentive and responded to my request for a new test tube quickly and I received the replacement within days.