1/2" Floor Flange, Home TZH 4 Pack Malleable iron Pipe Flange for Industrial vintage style, Flanges with Threaded Hole for DIY Project/Furniture/Shelving Decoration (4, 1/2 Inch)

I use gas pipe floor flanges mounted to the wall - www.amazon.com/dp/B0B2RFXV4Z along with whatever length of pipe you want. I've also mounted them to the ceiling and use a 90 degree fitting to make a hanging L bracket.