yeah so i was working on this homemade bowl stand yesterday and it came out decently. its got 2 openings for the small size joints and 1 for the large size (14.5mm and 18mm or whatever they are). only holds about a third of my bowls but 3 out at once is plenty, also holds ashcatchers pretty well in the 14.5mm spots and that blue cone on the left is my newest bowl, $28 for that small piece of glass. i've been looking forever for a glass on glass cone bowl with no chamber though so it was well worth it