I would be interested in the piece on the left from photo #8, #6 and the black piece on the left from #10 as well as the white piece below it in the same pic.
shown next to 1"thin wall pvc (for bichers) and 3" thinwall pvc. the bigger one has a girth of 2.5" diameter.
I have raised these guys from babies. I have had the 24" for 2.5 years and the 17" for 1.5 years.