Helmet Stand Topper

Bed Bath & Beyond sell acrylic paper towel holders that make great stands for (Star Wars) helmets. They are a little short so I designed this top that pressure fits so you can adjust the height for your particular helmet. Interior diameter is 20mm.

Edit: Apparently, the tolerances arent very strict on the acrylic rods. I added another stl where the hole is 20.5mm in diameter so it would fit. To give it height, just fill it with pennies or washers first.