I knife block created in OnShape. It holds 5 knives. The knife slots go all the way through. There are three holes in the bottom if you want to add ballast. It used about 700 grams of filament so I didn't see the need in the end to add any. There is a separate file for the feet. I printed those in flexible PLA using the default TPU settings. They were attached with CA glue. You could also use non-skid from the dollar store.