These are some feet I made for my Ultimaker. They are sloped to have a nice visual effect :) And they are nicely fitted for a snug fit on the plywood. They are nice and sturdy and give it a good lift off the table (allowing more airflow underneath for the electronics). Also you can add padding to the feet to reduce vibrations and noise. Setup to print all 4 on a sheet. Just print and fit, and you're good to go!