Toilet Paper Stand

I designed this toilet paper holder to be able to print on my prusa mini+

The dimensions are 18x18x63cm. For this I printed the "center piece" 3 times. I've printed the "Holder" with the flat side on the buildplate to get the nicest looking result, this does require some support. I've inserted some sand in the tubes from the bottom plate to add some extra weight to it.

Mine (the one in the photo's) is printed in PLA Matt Black.

This is my first design I'm posting here, so let me know what you think and if you see room for improvement!