I designed this vase riser for my terrace and wanted something modular that would allow me to adjust the height as needed. 

In the end, I went with this plate featuring 4 channels to insert simple yet functional wooden dowels, which you can find at any hardware store and I added 4 rounded feet.

The dowels are sold as a 25 mm diameter, but they actually measure 23 mm. 

The holes for the dowels are 23.2 mm, just enough to fit them in with a bit of friction. Then, 4 screws are inserted to lock the structure in place. 

I used M4x16 socket head screw and printed it with a wonderful Bambulab PLA-CF Iris Purple.

As it is modular, you can decide to put more than one plate, as you can see in my photos, also 4 or 5, based on what shape you want to give to the riser.

It's available in a small version for A1 mini and in a big version for other printers. The one you see in the photos is the smaller version.

I hope you like this :) If so, please boost me and send some photos of your prints!