Another product that falls into the "simple idea" category, the Form-A-Funnel is a moldable piece of stiffened plastic designed to keep your garage and driveway flooring clean. The Form-A-Funnel can flex to allow the flow of changed oil or filter around crossmembers, lower control arms, or skidplates. No more random, messy drips. You can easily mold the funnel into various sizes for other work. The plastic surface will not absorb or hold any liquids. The funnel comes in two sizes, selling for about $20 and $35, respectively.