Day 100. I was just messing around in Sketchup Pro and made this doodle, a sort of stage/walkway/minigolf object. No idea really what it's supposed to be, but it used a few extrusion and curving techniques in Sketchup. Sketchup used to be owned by Google and free, but they sold it to Trimble and now the full version costs about $700. It's still free for educators but you have to write to them with proof of your teacher status in order to get a licence code.