I designed this test tube holder to display my sea glass collection in the window. It can also be used for propagating plants or to display/store anything else that fits in a test tube.

The tubes shown are 25mm, but 1 inch should also work.

You can print just one or as many as you need and connect them side to side. They click together with a nice fit.

These were printed without support on a P1S and came out with good quality.