In order to handle my 3D printer in my little flat, I enclose it between two Ikea Lack tables. Since I needed a little more space thatn the Ikea Lack offers, I did these raisers that offers me the space I need, and also allows me to remove the upper table when I want and easyly put it on again.

Adds 10cm of clearance.

You only need some wood screws and a screewdriver.