Raising up a little stack

I need to raise up my mini stack (2 X 10” scoops + kick + Top) about 50 cm (20 inches) from the ground because I realized the height of the sections is crucial to make it sound properly. My first idea was obviously pallets but as the set will not be moved often I’m looking for a more definitive pedestal which will not sound or come in the way with vibrations. Ideas and experiences much apreciated!

Make them strong, act like you are building a speaker! And fill with rock wool.