Positive Grid Spark Mini stand

Couldn't find a stand for my Spark Mini so I modified an existing design for the Spark 2 to fit. Fits the rubber feet quite snugly so it can be lifted and moved and they mostly stay on.The original model included 5 and 10 degree options, 15 worked best for me so it's the only one I modified, but if there's interest I could include the other 2 versions.