Tuco's Plastic Bolt (Cat Toy)
My cat really likes to fetch plastic bolts. These 3D printable ones are some of his favorites. The model is from McMaster Carr STEP files for nylon bolts he also likes.
Video: https://twitter.com/TucoTheCat/status/584137184849960960
Please print SOLID if you can: Fill Density set to 100%. The weight makes them more satisfying to throw and catch!